When creating a ArcGIS Pro task, it's possible to create a task step with the action "Get Attributes" which allows the user to input values. This might be used later, for example in a task step which uses the action Calculate Attribute.
Today it's possible to specify a preset value for the input field, but not a dynamic value. In the configuration of the "Get Attributes" action, we already define the related table and field, so this is already done. The idea is to be able to use the existing value from this field as an alternative to manually specifying the preset value.