formula seems to be correct.

make sure both views exists on the list.

make sure configuration of these views and default view have different filtering conditions so that you can spot the difference.

Hi Marian, I set a calculated field with the formula to check if the formula works, and it does.

However it doesn't work inside the lookup configuration.

Thanks.

not sure what's exactly in your meaning 'dynamically' and what you expect from that.

but you can not fairly compare it to calc value control.

calc value control is evaluated at runtime and at every change of a object it depends on.

source view of lookup control (resp. all the formulas that depends on inline functions) is is evaluated just once at form load.

so in your case, it should give different views for different users, one being and second not being member of a group.

but it will not change the view on opened form if user's membership in the group changes.

Hi,

"source view of lookup control (resp. all the formulas that depends on inline functions) is is evaluated just once at form load.

so in your case, it should give different views for different users, one being and second not being member of a group."

That's exactly what I meant when I wrote "dynamically".

"but it will not change the view on opened form if user's membership in the group changes"

I don't need that.

Thanks.

ok.

so to check how does your formula evaluates at form load, place a single line text control on form and sets it default value to the formula.

Hi,

This is working now,  I have the international Nintex Version (spanish). So far I ve always used the formula fn-IsMemberOfGroup, which worked perfectly, but I ve just noticed that the lookup source view formula picker has a formula called EsMiembroDeGrupo, which seems to be the english  to spanish formula translation.

Thanks for your time.

Regards.