In a rent request form I have a text field 'delivery location' which shouldn't be shown if the user selects the first value of the {|pricefield_select_list_132|} in the "show instant layout" of the same entity.

Example:

In the 'add rent request form' i have the text field 'delivery location'
I type into the php show field of this text field:
if ({|pricefield_select_list_132|}[0]->data) {
return true;
}
else {
return false;
}

But I always get an error

Hello. This system does not work with price fields, as they are dynamic fields. If you want it to relate to the parent instance, the query should be much more complex. If the request form has a look other than "Button with redirect", it's easier and better to use Javascript to hide or show the field you need.