CASE WHEN {custentity_testfieldsecond} = 0 THEN 0 ELSE {custentity_testfieldfirst}/{custentity_testfieldsecond}
} END
CASE WHEN ({custentity_testfieldsecond} = 0) THEN ({custentity_testfieldres}=0) ELSE {custentity_testfieldres}=({custentity_testfieldfirst}/{custentity_testfieldsecond}
})END
both i tried are giving same error. ERROR: Invalid Expression