q1,array type, has other option.
i creat q2, array type, array filter is q1.
then i need to add a subquestion of q2 as: code "ohter",subquestion "{q1_other}"
BUT,ls told me other is reserved code.
Then, how to use q1 answer of other in q2 subquestion?

On this subject see:
bugs.limesurvey.org/view.php?id=9272

Denis

thanks Denis!
it's not a new bug.i still use version2.0.i am not sure if may i contribute something to the ls test work,a set of full test before release.

Group by group display:

Use normal option and label it 'Other' in question q1.
Create an short free text question in same group at bottom q2.
Use relevance to show q2 when Other selected at q1.
Now you can use filters:)