Can't select field for Default Value field of "Create New Row(s)" action within "Action Sequence"

{{Subject}} {{Model.label}} Opportunity name
                    </defaults>
                </action>
            </actions>
            <description>This action sequence creates a new row in the model "Task"</description>
            <inputs>
                
            </inputs>
        </actionsequence>
    <actionsequence id="72eab9c8-6341-4b5a-8f04-f54d2bf6139e" label="Create new row in any model" type="reusable" uniqueid="sk-2MCJ-2021">

This action sequence creates a new row in an input model. Choose the respective model and field in the button action.