Using Nintex Forms, when I try to create a rule for a lookup field (pulled in from a different SP list) the rule does not work. I've tried hide and disable. This is what the last iteration looks like. The Bank Account field is the lookup field in the form.
how can I include several positions from the drop down there
For example, if you have selected Deutsche Bank or Commerzbank, it should be hidden.
I have tried the following, but unfortunately it did not work.
you "double post" your question. See my answer here: https://community.nintex.com/t5/Nintex-for-SharePoint/Hide-Disable-Rule-for-more-for-more-than-one-a...
And if your unsure about the correct syntax of Nintex-Functions, just have a look to the hints, which the Formula Builder already gives. And googling helps sometimes also ;)