=IF([@4]="r611","r124",IF([@4]="r612","r14",IF([@4]="r711","r125",IF([@4]="r712","r15",IF([@4]="r73011","r12530",IF([@4]="r73012","r1530",IF([@4]="h611","h124",IF([@4]="h612","h14",IF([@4]="h711","h125",IF([@4]="h712","h15",IF([@4]="h73011","h12530",IF([@4]="h73012","h1530",IF([@4]="h7","h3",IF([@4]="r812","r15",IF([@4]="r9301","r2630","")))))))))))))))

is there a way i can simplify it? because plan to add another 6 IF, and it will be too long.. thanks