Does not respect the "Y" coordinate in a window

Hello I am creating a window with the settings inthe VisualDesigner and I put the coordinates x = 50 and Y = 100 and when clicking on the design if I muestar changes but once I run it in the browser only respects me values X, I am using the js and css files in the folder qeu biene of libCompiler

May be my specify question is stuped, but: do you really set ‘x’ in lower case and ‘Y’ in upper case?
If so, may it is an issue…