Use Show Condition Expression

[Anonymous]

Hello to all,

I have a Use Show Condition which requires the user to choose a zip code before the data presents itself. Right now I have:

=if (getselectedcount(mainzip)=1,'CH18')

What do I change in the expression to have it so the user can choose multiple zip codes. Not just one. The client wants to be able to pick multiple zip codes.

Thanks so much

[#2]

multiple means what?

try like

=if (getselectedcount(mainzip)>=1,'CH18')    ( 1or moreu can select now)