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In this constellation in the object definition the validation of the spinner is wrong:
property name="anz" type="numeric" dbtype="varchar" control="spinner" minvalue="0";
Regardless of the value, the validation error message is "Must be at least 0".
This only happens, when the minvalue="0" and there's no maxvalue defined. With minvalue > 0 and a maxvalue everything is fine.
Thanks for the fix
In this constellation in the object definition the validation of the spinner is wrong:
property name="anz" type="numeric" dbtype="varchar" control="spinner" minvalue="0";
Regardless of the value, the validation error message is "Must be at least 0".
This only happens, when the minvalue="0" and there's no maxvalue defined. With minvalue > 0 and a maxvalue everything is fine.