create IRule in tmsh

This compiles for me just fine

 

 

when HTTP_REQUEST {if {[class match [HTTP::uri] contains this_uri]}{pool my_test_pool_1} else {pool my_test_pool_2}}

 

 

 

You might try removing any extra spaces that you can. Do you have to have the bracket before when and the third bracket at the end? Haven't written an iRule in TMSH. The iRule Editor will become your best friend :)