Thread:Extension talk:Semantic Forms Inputs/Dynamic default value (now) possible?/reply

I'm afraid it is not possible with either of them. The default value is handed down to the input type in the same parameter as the current value, there is no possibility to distinguish between them so I can't decide when to parse and when not. The solution lies with SF here. You might vote on this or this bug or (more effectively) discuss it with Yaron directly.