Dear Friends,
I am new to collada document and i working on 3d city modeling project where output as collada document
i am getting problem while changing offset values in triangles indices
In the following Triangles are defined by vertices which have by default each 3 indices: one referring to xyz, one to uv texture coordinate and one to category.

<triangles count="25" material="t_120221122020112_5">
<input offset="0" semantic="VERTEX" source="#ground10005-geometry-vertex" />
<input offset="1" semantic="category" source="#ground10005-geometry-category"/>
<input offset="1" semantic="TEXCOORD" source="#ground10005-geometry-uv" set="0" />

<p>5 0 3 1 4 2 5 3 2 4 3 5 6 6 2 7 5 8 7 9 2 10 6 11 7 12 1 13 2 14 8 15 1 16 7 17 1 18 8 19 0 20 10 21 0 22 9 23 0 24 10 25 1 26 11 27 1 28 10 29 1 30 11 31 2 32 12 33 2 34 11 35 2 36 12 37 3 38 13 39 3 40 12 41 3 42 13 43 4 44 14 45 4 46 13 47 4 48 14 49 5 50 14 51 6 52 5 53 6 54 14 55 15 56 15 57 7 58 6 59 7 60 15 61 16 62 16 63 8 64 7 65 8 66 16 67 17 68 17 69 0 70 8 71 0 72 17 73 9 74</p>
</triangles>

<triangles count="7" material="footprint">
<input offset="0" semantic="VERTEX" source="#ground10005-geometry-vertex" set="0" />
<input offset="1" semantic="category" source="#ground10005-geometry-category" />
<p>12 75 14 76 13 77 11 78 14 79 12 80 11 81 15 82 14 83 11 84 16 85 15 86 10 87 16 88 11 89 17 90 10 91 9 92 10 93 17 94 16 95</p>
</triangles>

from the above I am getting problem while changing offset value as 2 for TEXCOORD if I keep same no problem, but I need to change offset value as 2 how can do?

see below for full script

<mesh>
<source id="ground10005-geometry-position">
<float_array id="ground10005-geometry-position-array" count="54">-35.1891 21.4154 22.8 -21.4501 -10.0139 22.8003 17.7036 -18.6407 22.8011 20.4966 -24.0306 22.8011 31.3451 -26.2673 22.8013 35.1265 -11.4193 22.8014 22.0463 -1.49041 22.8011 -7.21759 -0.78157 22.8006 -25.8061 26.3018 22.8002 -35.1891 21.4154 0 -21.4501 -10.0139 0.00030899 17.7036 -18.6407 0.00106049 20.4966 -24.0306 0.00112152 31.3451 -26.2673 0.00133133 35.1265 -11.4193 0.00138092 22.0463 -1.49041 0.00111771 -7.21759 -0.78157 0.000564575 -25.8061 26.3018 0.000171661</float_array>
<technique_common>
<accessor count="18" source="#ground10005-geometry-position-array" stride="3">
<param name="X" type="float" />
<param name="Y" type="float" />
<param name="Z" type="float" />
</accessor>
</technique_common>
</source>
<source id="ground10005-geometry-uv">
<float_array id="ground10005-geometry-uv-array" count="192">0.258272 0 0.283218 0.133082 0.311226 0.0678655 0.258272 0 0.256688 0.135968 0.283218 0.133082 0.19548 0.057745 0.256688 0.135968 0.258272 0 0.141299 0.249043 0.256688 0.135968 0.19548 0.057745 0.141299 0.249043 0.153381 0.369741 0.256688 0.135968 0 0.293636 0.153381 0.369741 0.141299 0.249043 0.153381 0.369741 0 0.293636 0.00314922 0.369741 3.44437e-006 0.369741 0.574794 0.650485 0.574797 0.369741 0.574794 0.650485 3.44437e-006 0.369741 0 0.650485 8.86451e-006 0.650485 0.830991 1 0.831 0.650485 0.830991 1 8.86451e-006 0.650485 0 1 0.970033 0.273867 0.999999 0.369741 1 0.273867 0.999999 0.369741 0.970033 0.273867 0.970032 0.369741 0.875956 0.252023 0.970028 0.369741 0.970032 0.252023 0.970028 0.369741 0.875956 0.252023 0.875952 0.369741 0.693196 0.0590615 0.752149 0.175162 0.752149 0.0590615 0.752149 0.175162 0.693196 0.0590615 0.693196 0.175162 0.693194 0.0570388 0.633507 0.175162 0.693196 0.175162 0.633507 0.175162 0.693194 0.0570388 0.633505 0.0570388 0.875948 0.175162 0.633509 0.369741 0.875952 0.369741 0.633509 0.369741 0.875948 0.175162 0.633505 0.175162 0.760254 0.461165 0.574799 0.650485 0.760255 0.650485 0.574799 0.650485 0.760254 0.461165 0.574797 0.461165 0.793907 0.078479 0.752151 0.175162 0.793908 0.175162 0.752151 0.175162 0.793907 0.078479 0.752149 0.078479 0.600077 0.237454 0.591203 0.369741 0.633505 0.290364 0.57485 0.242603 0.591203 0.369741 0.600077 0.237454 0.57485 0.242603 0.52593 0.334145 0.591203 0.369741 0.57485 0.242603 0.45414 0.170658 0.52593 0.334145 0.452289 0.0538026 0.45414 0.170658 0.57485 0.242603 0.316589 0.170658 0.452289 0.0538026 0.311226 0.0982993 0.452289 0.0538026 0.316589 0.170658 0.45414 0.170658</float_array>
<technique_common>
<accessor count="96" source="#ground10005-geometry-uv-array" stride="2">
<param name="S" type="float" />
<param name="T" type="float" />
</accessor>
</technique_common>
</source>
<source id="ground10005-geometry-category">
<Name_array id="ground10005-geometry-category-array" count="12">bf fac0030 fac0031 fac0032 fac0033 fac0034 fac0035 fac0036 fac00037 fac0038 fac0039 roof0005</Name_array>
<technique_common>
<accessor source="#ground00005-geometry-category-array" count="12">
<param name="category" type="Name" />
</accessor>
</technique_common>
</source>
<vertices id="ground10005-geometry-vertex">
<input semantic="POSITION" source="#ground10005-geometry-position" />
</vertices>
<triangles count="25" material="t_120221122020112_5">
<input offset="0" semantic="VERTEX" source="#ground10005-geometry-vertex" />
<input offset="1" semantic="TEXCOORD" source="#ground10005-geometry-uv" set="0" />
<input offset="1" semantic="category" source="#ground10005-geometry-category"/>
<p>5 0 3 1 4 2 5 3 2 4 3 5 6 6 2 7 5 8 7 9 2 10 6 11 7 12 1 13 2 14 8 15 1 16 7 17 1 18 8 19 0 20 10 21 0 22 9 23 0 24 10 25 1 26 11 27 1 28 10 29 1 30 11 31 2 32 12 33 2 34 11 35 2 36 12 37 3 38 13 39 3 40 12 41 3 42 13 43 4 44 14 45 4 46 13 47 4 48 14 49 5 50 14 51 6 52 5 53 6 54 14 55 15 56 15 57 7 58 6 59 7 60 15 61 16 62 16 63 8 64 7 65 8 66 16 67 17 68 17 69 0 70 8 71 0 72 17 73 9 74</p>
</triangles>
<triangles count="7" material="footprint">
<input offset="0" semantic="VERTEX" source="#ground10005-geometry-vertex" set="0" />
<input offset="1" semantic="category" source="#ground10005-geometry-category" />
<p>12 75 14 76 13 77 11 78 14 79 12 80 11 81 15 82 14 83 11 84 16 85 15 86 10 87 16 88 11 89 17 90 10 91 9 92 10 93 17 94 16 95</p>
</triangles>
</mesh>


it is urgent
and thanks advance