Updating Custom Expressions in Custom Forms via API

Question

Hey all,I'm trying to update customExpression values (those calculation fields in Calculated form for Custom Forms) through the API. Looks like I can't update CTGPEX directly.Is going through the Category object the only option? Seems a bit much to update all CategoryParameters when I only need to change a few customExpression values. Plus, I haven't even had luck with that approach.Any ideas on how to directly update those customExpression fields?Thanks!

LToledo · Answer

For anyone facing a similar challenge, here's how I managed to update customExpression values --

It turns out you do need to update the Category object, and unfortunately, it requires including all CategoryParameters, even those without custom expressions. I haven't found a more efficient method yet.

Here's the general approach that worked for me:

PUT https://{workfront}.{instance}.workfront.com/attask/api/v19.0/CTGY/{category_id}

{
    "categoryParameters": [
        {
            "ID": f"{category_param1.categoryID}_{category_param1.parameterID}",
            "customExpression": custom_expression
        },
        {
            "ID": f"{category_param2.categoryID}_{category_param2.parameterID}",
            "customExpression": custom_expression
        },
    ]
}

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