Iam doing some calculation part of my new project and I have old programs written in gwbasic can any one tell me how to create a double dimension list in autolisp. I will be thankful if anyone evaluate below code in lisp. thanks in advance. 510 FOR I = 1 TO ICOILS 520 IF I > 1 THEN 550 530 D = AIMD:DE= CONDPSLA 540 GOTO 560 550 D = BIMD:DE=CONDPSLB 560 IDE = DE 570 B1 = PAI*D*PICH(I)/PITCH - CUWID 580 B2 = PAI*OMD*PICH(I)/PITCH - CUWID 590 STEIG(I) = ((B2 - B1)/(DE - 1))/2 600 X1(I,1) = B1/2 610 X2(I,1) = X1(I,1) + (STEIG(I)/F(I)) 620 FOR J = 2 TO IDE 630 K = J - 1 640 X1(I,J) = X1(I,K) + STEIG(I) 650 X2(I,J) = X2(I,K) + STEIG(I) 660 NEXT J 670 NEXT I