OM automaticaly delets mye my code that i have writen in tex and Equation based form. I can make models With graficaly Interface but when i try to Write my own code  all the tex i have writen will be deleted when i click on another symbol ore try to simulated it. The files stay but alle tex inside exept for Equation, and the text that is there from the begining

I Think i clicked on a setting when i first run the the text mode.

Anyone know how to reset these setting so it dosen get deleted

Best Wishes.