Wish How to edit anotherdatepicker in B.E. Year

ref this
Hi all,
I 'm interested in Erel's another date picker for use all of B4A,B4J and B4i. I have tried to change his sourcecode,but dayofweek is not corrected.
I set min year in designer is 2540 and max year is 2590 and start firstday is Sunday. I changed day of week is Thai day of week
My example today is The Wednesday 22 April 2020 ,I need to change Wednesday 22 April 2563.

I'm sorry that my English.

Probably better use B4XDialogs? They are cross platform and you get B4XDateTemplate