Rule trigger missing fields for filter?

[Jonathan]

Hi, I’m setting up a new rule that should be triggered when an entity is updated. I’m required to select the field that’s being updated, however my field of interest, which is a standard multiselect, isn’t contained in the list. I’m perplexed; is there a reason for this? A workaround?

[Chr1sG]

A multi-select is basically like a to-many relationship, so you need to use the 'entity (un)linked to (from) ...' trigger:

Note: if in the actions, you need to use a formula, you’ll be able to reference to the (un)linked entity.