Cannot change project properties

[Tony Arnold]

Not sure if this is a bug or a feature! I want to change the properties
of a project. In Particular I've changed to pyqt6 from pyqt5 for this
project so I want to update the properties to reflect this.

The dialogue box pops up and I can modify things there but the OK
button is greyed out so I can't confirm my changes.

Any suggestions to fix this?

Regards,
Tony.