I am tring to use the following code to conditionally change to color of fonts in a grid control

foreexpr = 'IIF(ALLTRIM(customer.region) == "WA",' + ;
LTRIM(STR(COLOR_BLUE)) + ',' + LTRIM(STR(COLOR_BLACK)) +')'
THIS.SETALL("DynamicForeColor",foreexpr,"Column")
This works fine but how would a add a third condition? Thanks.