Hi everyone, I have some trouble adapting an existing fortran code for my application. In the following Module I am optimizing a value for two planes ( i = iplan one&two). In order to do that, I need to assign ten certain values from an external inp. file for each plane. I have two loops, the first one selecting iplan one, respectively two. In this loop is the second one, which is supposed to read in value one (dcp(i,kl)) to ten. One value for each run in the secon loop. That means each plane is assign with ten optimization runs, and each run with a certain value. My problem is, that: read (iread,*) dcp(i,kl) doesn´t work. The read command is linked to the correct variable in the external inp. file, but I think that there is something wrong with the declaration of dcp(i,kl)? Is there anyone who can help me with that problem? Code (Text): ! note: module inout for iread use inout integer :: kl, i, iplan, nscwmi=100, determdcp real :: xnscwmi, dcp(2,10), fractionvor dimension dcp(i,kl) !for iplan=1 & iplan=2; nscwmi from differnet module [B]i = 1,iplan[/B] xnscwmi = nscwmi ! determdcp from external inp with determdcp=1 read(iread,*) determdcp if (determsp .eq. 1) go to 501 continue 501 do 502 kl=1, 10 READ (iread,*)[B][COLOR="Red"]dcp(i,kl)[/COLOR][/B] fractionvor = xnswmi xnscwmi = fractionvor/10 ai = xnscwmi*d(i,kl)+0.75 imax = int(ai) .. .... b0(i) = 0. a0(i) = imax a1 (i) = a1(i)+ a0(i) Thanks!