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JustinWa2
Level 4
January 30, 2026
Solved

Logic on a custom form

  • January 30, 2026
  • 2 replies
  • 24 views

Hello! I’m trying to use logic on custom form but can’t get it to work correctly. I have two fields, both multi select. What I’m trying to do is if an option on the first field is selected, then the second field automatically selects an option. Is that possible?

Best answer by Kurt_Jones

Justin,

You can use a single-select dropdown on the first field then use an external lookup field for the second field that takes the answer from the first and uses it as part of filtering in the external lookup to give a list of choices related to the answer (or it could be just one option if you wish).  Visuals below to explain:

A dropdown field for choice of type of webpage:

 

I choose the first option and the next field gives me options only related to that choice, if I choose a different option in the first field then my options in the 2nd field are different.

 

If I chose Product Support US instead in the first field, you can see how options changed:

 

The EXPL page gives some guidance and examples of what I’m showing above to help, https://experienceleague.adobe.com/en/docs/workfront/using/administration-and-setup/customize/custom-forms/design-a-form/external-lookup-examples

2 replies

Patrick-antegma
Level 4
January 30, 2026

@JustinWa2 This is not possible! Only option is have multiple second dropdowns with different defaults, but this is normally not an option.

Patrick-antegma
Level 4
January 30, 2026

We only use this approach when we automate the result afterwards using Fusion. For reporting it’s a nightmare.

Kurt_Jones
Community Advisor
Kurt_JonesCommunity AdvisorAccepted solution
Community Advisor
February 1, 2026

Justin,

You can use a single-select dropdown on the first field then use an external lookup field for the second field that takes the answer from the first and uses it as part of filtering in the external lookup to give a list of choices related to the answer (or it could be just one option if you wish).  Visuals below to explain:

A dropdown field for choice of type of webpage:

 

I choose the first option and the next field gives me options only related to that choice, if I choose a different option in the first field then my options in the 2nd field are different.

 

If I chose Product Support US instead in the first field, you can see how options changed:

 

The EXPL page gives some guidance and examples of what I’m showing above to help, https://experienceleague.adobe.com/en/docs/workfront/using/administration-and-setup/customize/custom-forms/design-a-form/external-lookup-examples

If my response answered your question, please mark it answered, so others can find the answer