XML Problem when using Include

I'm sorry if the subject is not match with my question.

so, I have 3 event sheet

-esmain (event sheet for main level)

-esmain2 (next level of esmain)

-esglmain

esglmain included in esmain and esmain2

<img src="http://3.bp.blogspot.com/-MLwr_TDGnJ8/UZ6qC0OAlMI/AAAAAAAAAo4/dNatKvEQMM0/s1600/tmp1.png" border="0" /><img src="http://1.bp.blogspot.com/-uWZ-7iy2zhY/UZ6qDcR_KII/AAAAAAAAApE/EvpoLlWndco/s320/tmp2.png" border="0" />

in esglmain I load xml using ajax

<img src="http://1.bp.blogspot.com/-dnLmK1Eig9g/UZ6qDT3sL-I/AAAAAAAAApA/pVNK1BhxeOw/s320/tmp3.png" border="0" />

when I run the project, in main level, xml working well,

XML.NodeCount("/d/t[c='kota']/c") give a result 1 and this is correct

but when I'm in main level 2 (esmain2), that xpath give a result 0,

I don't really know where is my problem, because esmain and esmain2 have a same event, can somebody help?