Can you build a dynamic drop down field on a marketo form with a custom hidden field?

Question

My team is planning to experiment with our contact us form on our website. We are looking to dynamically update the drop-down options based on a person's account type. For example, if it's a person on our free plan we want the drop-down to talk about upgrades vs. support/talking to sales.

I originally thought I could add our custom personal account type field has a hidden value on the form, but that doesn't seem to be working and what I'm seeing online is the order of events would be a field before the drop down that gets completed beforehand. Is there any other way I could accomplish this?

SanfordWhiteman · Accepted Answer

Think you mean “custom field”, not “custom activity”; I edited the title of your post accordingly.

There’s no reason you can’t use a hidden field to create a Visibility Rule. (I assume that’s what you already tried, though you weren’t clear.)

But for this to work, the field needs to be pre-filled, which means they need to either:

have already visited your site and filled out a Marketo form^[1]
have clicked a tracked link in a Marketo email to get to your page

[1] which also requires my custom pre-fill JS

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