Code:
#include <acknex.h>

void main()
{
	while(1)
	{
		DEBUG_VAR(key_esc,20);
		wait(1);
	}
}

If this shows 1 then you are overwriting it somewhere else, maybe in some include file, I don't know. Maybe add an "DEBUG_VAR(on_esc,40);" as well.

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