Can not check the checkbox on popup window

Dear All

I am using selenium with java. On the click on the hyperlink, a pop
window is displayed. I can click on the close button. But fail to
click the check box. the test case is:
selenium.click("link=Business Unit(s)");
selenium.waitForPopUp("test", "30000");
selenium.selectWindow("test"]);
selenium.click("xpath=(//INPUT[@type='checkbox'])[1]");
selenium.click("/FORM/DIV/SPAN/DIV[contains(text(),'CPI Asia')]/INPUT/
@type='checkbox'");
The result is:
16:31:31.531 INFO - Command request: click[xpath=(//
INPUT[@type='checkbox'])[1], ] on session
a5913960ad8544fa8221cd2667c3e3ff
16:31:33.015 INFO - Got result: OK on session
a5913960ad8544fa8221cd2667c3e3ff
16:31:33.015 INFO - Command request: click[/FORM/DIV/SPAN/
DIV[contains(text(),'CPI Asia')]/INPUT/@type='checkbox', ] on session
a5913960ad8544fa8221cd2667c3e3ff
16:31:34.093 INFO - Got result: ERROR: Element /FORM/DIV/SPAN/
DIV[contains(text(),'CPI Asia')]/INPUT/@type='checkbox' not found on
session a5913960ad8544fa8221cd2667c3e3ff
]]
The html source is(i got it using IE developer tool:

action="MultiTreeviewBottomFrame.aspx?
Sentinel=Sentinel&MaintainSpec=true&selectionType=checkBox&SelectedValuesScriptMethod=selectedBUValues&scriptMethod=SelectBUs&dataSource=Class
%3aXeno.Web.UI.DataSources.TaxonomyXNodeTreeViewDataSource
%2cXenoWebControls
%24GSMBusinessUnit&selectLeafOnly=False&rootNodesNotSelectable=false&selectionRequired=False&showHoverText=False"
method="post">

id="droot">

id="21079a4ec66b-4024-4d4c-9dd7-1a3be69bffcc" style="TEXT-DECORATION:
underline">name="hidden21079a4ec66b-4024-4d4c-9dd7-1a3be69bffcc" value="CPI
Africa" />value="21079a4ec66b-4024-4d4c-9dd7-1a3be69bffcc" />CPI Africa

SPAN>

Actually no checkbox was cliecked in UI side. Does anybody know how to resolve
it.

Thanks
Eric

selenium return 'OK', but the checkbox in UI actually did not be checked. does anyone know what happened?

Hi,

Can u please try it with
selenium.check("id of checkBox"); instead of selenium.click("id of checkBox");

Please let me know the result...

Thanks Priyanka
I changed to
selenium.check("xpath=(//INPUT[@type='checkbox'])[1]");
selenium.ischeck("xpath=(//INPUT[@type='checkbox'])[1]");

selenium return 'OK' and 'true', but UI actually did not get checked.