Cascade Dropdown reset value

Hi everyone, I have to make sure that when the document type is 1 some dropdowns return to the null value and are disabled.
Should I use a workflow or condition?

You can do that with a condition. You can disable the dropdown or even hide it, depending on the value of another input. Using a condition is the fastest and simplest option.

Ok I managed to set visibility with the conditions but which property should I use to set the null value of the dropdown?

Hey! Did you figure out how to do this? I have a dropdown that I need to reset to null if a second dropdown option (A) is selected. I can disable / hide the first dropdown but the value is still in there and gets recorded to my record when it saves. I want it to record as empty.

Any update on how to clear a dropdown or set it to null?