Hi, if I'm using an expression like if (control:VSA1=~/something/ || control:VSA2 =~/something_else/) {...} I do get the information "(Attribute control:VSA1 was not found)" in case the VSA is not in the control context. As the condition is '||', I would expect, that FR tries the next option, but it does not. It sets the hole Expression to FALSE. If I exchange the Options, it works for me, because VSA2 is always available. if (control:VSA2=~/something/ || control:VSA1 =~/something_else/) {...} If I preset VSA1, it works too, but will add slightly more load. Is there a solution for the missing Attribute to be ignored in '||' conditions i.e. setting it discrete to FALSE, so tht FR is able to evaluate the rest of the || expression? Would this be advisable? Thank you. Stefan