I am banging my head on my desk using this binding mistake.. I've checked a number of in the postings for that BindingExpression route mistake and can't see anything that actually works with my condition. There is indeed lots of code with extension .py that employs getters and setters and https://commercialspacegurgaon.family.blog/2025/05/12/your-dream-home-awaits-at-m3m-crown-gurgaons-finest/