Local Tuya - changing -1 DP value to True / False

Hi there,
Adding a Tuya based smart water valve manually in local tuya (the first device of the same kind I purchased added without problems but this one gives me the No Datapoints error).

I see in the documentation ( Local Tuya) that it says: " Note: Any DPS added using this option will have a -1 value during setup.".

Totally true! however I dont seem to find the option to change the Value to a boolean value (True / False for the switch (DP 1).

Any help would be much appreciated.

diagnostics ouput: