Validating a value is present for MultiSelect

[anonymous]

What's the best implementation for validating for value <> '' for unhidden custom fields. I am using DynamicFieldsPlugin with MultiSelectFieldPlugin. Here is a sample of my trac.ini:

ci_appls = text
ci_appls.clear_on_hide = true
ci_appls.format = list
ci_appls.hide_when_component = Facility
ci_appls.invalid_if =
ci_appls.label = Application CIs Affected
ci_appls.multiselect = true
ci_appls.options = Desk Top|Help Desk Application
ci_appls.order = 8
ci_appls.value =
ci_appls.show_when_component = Applications
ci_facility = text
ci_facility.clear_on_hide = true
ci_facility.format = list
ci_facility.hide_when_component = Applications
ci_facility.invalid_if =
ci_facility.label = Facility CIs Affected
ci_appls.multiselect = true
ci_appls.options = Power|Cooling
ci_appls.order = 9
ci_appls.value =
ci_appls.show_when_component = Facility

The invalid_if does not catch the error.

[Olli Kallioinen]

Sorry, I haven't used DynamicFieldPlugin so I don't know.

[anonymous]

Regardless of the DynamicFieldPlugin, if I want to ensure something is selected from the multi select field when it is not hidden how would I do it?

[anonymous]

I believe the fact that it is a list is throwing off the "invalid_if" check from the DynamicFieldsPlugin.