flashing cells easylanguage

hi forumer,
i have a simple conditoned alert and i need an helping hand in coding a flshing background color of the plot statement

Code:

#
Var:
MyAlarm = True;

if Condition1 then
     begin
       Plot1 ("YeY", "1");
       Alert( ! ( "Alert" ) );
       SetPlotColor ( 1 , DarkBlue ); 
       SetPlotBGColor (1, White);

       Once begin
       MyAlarm = (playsound("C:\MyFiles\MySounds.wav")); 
       end;
       
       end
Else begin
       Plot1 ("", "1");
       SetPlotBGColor (1, Transparent);
     end;
#

 

oh....wow.....