Saurabh's method is really typical.
As far I know, the unique filenames are used serial wise. Suppose you have created your first player in the game, then using bats.xml file from the player editor.
<Face ID="1">
<Name>Created Player 1</Name>
<FileName>fac920f0ae7bdd3743510146188e0823.big</FileName>
So for the first created player, the unique filename is fac920f0ae7bdd3743510146188e0823.big or you can simple use the face ID "1" instead of big filename. So replace ishi.big with fac920f0ae7bdd3743510146188e0823.big.
Here are the details of all the created players, use faces according to the number you have created them
<Face ID="1">
<Name>Created Player 1</Name>
<FileName>fac920f0ae7bdd3743510146188e0823.big</FileName>
</Face>
- <Face ID="2">
<Name>Created Player 2</Name>
<FileName>2cb8cf97b4194d14477a61fc41a71ba7.big</FileName>
</Face>
- <Face ID="3">
<Name>Created Player 3</Name>
<FileName>771a54a7b0020b70220a90c29712ceac.big</FileName>
</Face>
- <Face ID="4">
<Name>Created Player 4</Name>
<FileName>69b4c77d0091d105ba8c7899f2ecbdbb.big</FileName>
</Face>
- <Face ID="5">
<Name>Created Player 5</Name>
<FileName>6269a73d5493bca17f9feeee85319b65.big</FileName>
</Face>
- <Face ID="6">
<Name>Created Player 6</Name>
<FileName>95bbc6ec58f40c1e1bf236842de1d83d.big</FileName>
</Face>
- <Face ID="7">
<Name>Created Player 7</Name>
<FileName>7dd0afe05abcec999fb1f1865cb7a661.big</FileName>
</Face>
- <Face ID="8">
<Name>Created Player 8</Name>
<FileName>d70a9b4f971c71557aa57032babae154.big</FileName>
</Face>
- <Face ID="9">
<Name>Created Player 9</Name>
<FileName>a5b5cae4974ab824639a580b6fe4ab2d.big</FileName>
</Face>
- <Face ID="10">
<Name>Created Player 10</Name>
<FileName>f80d688cb2069506d189c518431f0f87.big</FileName>
</Face>
- <Face ID="11">
<Name>Created Player 11</Name>
<FileName>fc8e1463adac2ca286c1259555da1159.big</FileName>
</Face>
- <Face ID="12">
<Name>Created Player 12</Name>
<FileName>d38c09ec089ce80e5ef06571b638a425.big</FileName>
</Face>
- <Face ID="13">
<Name>Created Player 13</Name>
<FileName>bb84957a49bea6c45c44a7a53dcbf46b.big</FileName>
</Face>
- <Face ID="14">
<Name>Created Player 14</Name>
<FileName>42dab536aa21950100287cc03b3ead62.big</FileName>
</Face>
- <Face ID="15">
<Name>Created Player 15</Name>
<FileName>e35350f62a423599875623aceb1ba27d.big</FileName>
</Face>
- <Face ID="16">
<Name>Created Player 16</Name>
<FileName>131496146060f13a179b7adc856d28a3.big</FileName>
</Face>
- <Face ID="17">
<Name>Created Player 17</Name>
<FileName>06caeb4bf7ae75afea4f83e93608d6b2.big</FileName>
</Face>
- <Face ID="18">
<Name>Created Player 18</Name>
<FileName>c4a305bfd29580fbf733ef3aa183c196.big</FileName>
</Face>
- <Face ID="19">
<Name>Created Player 19</Name>
<FileName>222892d0e454ac6100984571bdc530a2.big</FileName>
</Face>
- <Face ID="20">
<Name>Created Player 20</Name>
<FileName>6f0ad07ee8020179b14b64954c2a09a7.big</FileName>
</Face>
- <Face ID="22">
<Name>Created Player 22</Name>
<FileName>989bedda1464e549c59c020388ce0886.big</FileName>
</Face>
- <Face ID="23">
<Name>Created Player 23</Name>
<FileName>1f60a93716cc7db9aac14f6f5df77cc8.big</FileName>
</Face>
- <Face ID="24">
<Name>Created Player 24</Name>
<FileName>d38c09ec089ce80e5ef06571b638a425.big</FileName>
</Face>
- <Face ID="25">
<Name>Created Player 25</Name>
<FileName>8525d0b5d6d3ad523b94b172b97dc8c7.big</FileName>
</Face>
- <Face ID="26">
<Name>Created Player 26</Name>
<FileName>6207e572a86e77d4db7fbbc01880323c.big</FileName>
</Face>
- <Face ID="27">
<Name>Created Player 27</Name>
<FileName>5cfff37cbfc68ddc2a6649492c13795a.big</FileName>
</Face>
- <Face ID="28">
<Name>Created Player 28</Name>
<FileName>d38c09ec089ce80e5ef06571b638a425.big</FileName>
</Face>
- <Face ID="29">
<Name>Created Player 29</Name>
<FileName>35f5fb8604a39d83b7cbacd1bbaebd3a.big</FileName>
</Face>
- <Face ID="30">
<Name>Created Player 30</Name>
<FileName>491f855b9ffc06d5b8dc2f3fff6118b6.big</FileName>
</Face>
- <Face ID="31">
<Name>Created Player 31</Name>
<FileName>98ce7a4c3e22bf0a74c934481b0f6abd.big</FileName>
</Face>
- <Face ID="32">
<Name>Created Player 32</Name>
<FileName>5fd587de88c513c1030fa790ae41ec15.big</FileName>
</Face>
- <Face ID="33">
<Name>Created Player 33</Name>
<FileName>a4408778a79aa9c71b2bd4a586c15753.big</FileName>
</Face>
- <Face ID="34">
<Name>Created Player 34</Name>
<FileName>e456b3cd6ff4b5e3d17466fc6b6162e7.big</FileName>
</Face>
- <Face ID="35">
<Name>Created Player 35</Name>
<FileName>d0875388f4f8035d86917cd645938dc7.big</FileName>
</Face>
- <Face ID="36">
<Name>Created Player 36</Name>
<FileName>a92f6bfd9ca80e8fbe136ebd1dbfacfa.big</FileName>
</Face>
- <Face ID="37">
<Name>Created Player 37</Name>
<FileName>c344cc0c0eb8882dcb52e5deaab9650e.big</FileName>
</Face>
- <Face ID="38">
<Name>Created Player 38</Name>
<FileName>1e593edf8342421320a9b8ced7458251.big</FileName>
</Face>
- <Face ID="39">
<Name>Created Player 39</Name>
<FileName>c04c5a6a67633dad305754d4622725b2.big</FileName>
</Face>
- <Face ID="40">
<Name>Created Player 40</Name>
<FileName>4e01a572a4bed80c5e15935302f144d7.big</FileName>
</Face>
- <Face ID="41">
<Name>Created Player 41</Name>
<FileName>3b5848bd8156c50f0e680001ca836088.big</FileName>
</Face>
- <Face ID="42">
<Name>Created Player 42</Name>
<FileName>fc0e025ff9b0d25ce89f2f534fe76136.big</FileName>
</Face>
- <Face ID="43">
<Name>Created Player 43</Name>
<FileName>a9ec14f6fc29a2f62c981517536f2d82.big</FileName>
</Face>
- <Face ID="44">
<Name>Created Player 44</Name>
<FileName>5da5411ee89ddb26ca3b8966e5c1d920.big</FileName>
</Face>
- <Face ID="45">
<Name>Created Player 45</Name>
<FileName>eeec575ef538ce9f2290e6852b0761c9.big</FileName>
</Face>
- <Face ID="46">
<Name>Created Player 46</Name>
<FileName>07621631a67e42749191126299e0831a.big</FileName>
</Face>
- <Face ID="47">
<Name>Created Player 47</Name>
<FileName>58a0c968f394b0d22a66091203e58938.big</FileName>
</Face>
- <Face ID="48">
<Name>Created Player 48</Name>
<FileName>ada4c6dde96d6359615ce5b71fb158f1.big</FileName>
</Face>
- <Face ID="49">
<Name>Created Player 49</Name>
<FileName>d06eb343158ada29201e4639cb9fade8.big</FileName>
</Face>
- <Face ID="50">
<Name>Created Player 50</Name>
<FileName>997c24f26bdfc2afff9433adc66ea341.big</FileName>
</Face>
- <Face ID="51">
<Name>Created Player 51</Name>
<FileName>0ceeb6b0ec5236d2d5a9e8a5c7c9a84f.big</FileName>
</Face>
- <Face ID="52">
<Name>Created Player 52</Name>
<FileName>f47cf72d1c870c8767c84112b355a4b2.big</FileName>
</Face>
- <Face ID="53">
<Name>Created Player 53</Name>
<FileName>63b7651822ac6b2ea6bc828bf1df5688.big</FileName>
</Face>
- <Face ID="54">
<Name>Created Player 54</Name>
<FileName>e853f1642e0a450bd4f823bd845931df.big</FileName>
</Face>
- <Face ID="55">
<Name>Created Player 55</Name>
<FileName>3589e42381c253ac7296ed7d92f5d27e.big</FileName>
</Face>
- <Face ID="56">
<Name>Created Player 56</Name>
<FileName>b758aaf034d6e25102d20c94ad1bec0e.big</FileName>
</Face>
- <Face ID="57">
<Name>Created Player 57</Name>
<FileName>104d71d3f2514fe477cf787d1e57cc32.big</FileName>
</Face>
- <Face ID="58">
<Name>Created Player 58</Name>
<FileName>23c8ffdf26bf7f600bec2b2079cf48f4.big</FileName>
</Face>
- <Face ID="59">
<Name>Created Player 59</Name>
<FileName>c698bf621eb92aef1b0a827eee2f14c7.big</FileName>
</Face>
- <Face ID="60">
<Name>Created Player 60</Name>
<FileName>10cd2aefcbc6d1a723dff340ff14743c.big</FileName>
</Face>
- <Face ID="62">
<Name>Created Player 62</Name>
<FileName>3f09d347b9bf85e14ab3b3677df64a3d.big</FileName>
</Face>
- <Face ID="63">
<Name>Created Player 63</Name>
<FileName>583484fd307e1f583a6bc03fc4b6887d.big</FileName>
</Face>
- <Face ID="64">
<Name>Created Player 64</Name>
<FileName>54956bc6e72935ddabf68a227b3736c2.big</FileName>
</Face>
- <Face ID="65">
<Name>Created Player 65</Name>
<FileName>3de661ddb235d9d0ba8b08d20792089b.big</FileName>
</Face>
- <Face ID="66">
<Name>Created Player 66</Name>
<FileName>238ecbc9e88cf5189996cd714aaf4949.big</FileName>
</Face>
- <Face ID="67">
<Name>Created Player 67</Name>
<FileName>139602311d040566c3e852948919ba8d.big</FileName>
</Face>
- <Face ID="68">
<Name>Created Player 68</Name>
<FileName>cab332c5966da7a2067260ddf9e21114.big</FileName>
</Face>
- <Face ID="69">
<Name>Created Player 69</Name>
<FileName>b097683f64f6fb0a1ace3e5211400de3.big</FileName>
</Face>
- <Face ID="70">
<Name>Created Player 70</Name>
<FileName>75be778b340bdba0c510df4ef9067249.big</FileName>
</Face>
- <Face ID="71">
<Name>Created Player 71</Name>
<FileName>aa949afb14114e980f9328eb43f5cdeb.big</FileName>
</Face>
- <Face ID="72">
<Name>Created Player 72</Name>
<FileName>79590b5929efee94f31b0a6e8903f2c1.big</FileName>
</Face>
- <Face ID="74">
<Name>Created Player 74</Name>
<FileName>2371e6c8ca59cec7740e1f68e0dce4eb.big</FileName>
</Face>
- <Face ID="75">
<Name>Created Player 75</Name>
<FileName>2855401c8daa6599769f374a193e44ee.big</FileName>
</Face>
I hope this will help you otherwise you can PM me anytime for any help you need.