I'm attempting to conditionalize a "{Set,name,value,A}" set action in a single pass of a listx parse. Since I can't do this (IIF,"'a'='b'",{Set,name,value,A},} in that the Set would fire prior to evaluation of the IIF. This (IIF,"'a'='b'",\{Set,name,value,A\},} won't work for me because the Set happens after the fact. I tried this, {(IIF,"'a'='b'",Set,},name,value,A}. and it doesn't appear to work even though listx evaluates from the inner-most item outward. Any ideas how to accomplist conditionalizing the set of an action in a single pass? Regards, Mike