ArchMaterial's view provider has a setTaskValue helper to set values of widgets inside a task panel. While specific to ArchMaterial, the real place where the helper is called is at BIM_Classification. It appears it's not a general but more like an ad-hoc API for a specific purpose and for a specific object.
In any case, this fix allows widgets that expect a numerical value to have their value set. Before, their value was set as text, unexpectedly.
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