How do I get the screen to flash one color?

Try to execute the following program. ACLS WHILE TRUE VSYNC 1 A=MAINCNT MOD 60 IF A==0 THEN BACKCOLOR #RED IF A==30 THEN BACKCOLOR 0 WEND

Thank you!

If you want the entire screen to flash rather than just the background I use FADE RGB(255,255,0,0),10 WAIT 30 FADE RGB(0,0,0,0),10 This can be assigned to button press as well. If you want a quicker flash, make the 10 a smaller number

I made a mistake. Change wait to the same number following rgb(). In this case, I should have changed it to 10

Thank you....both of you.