How to write register/array into Simulink simple port RAM ?

Hi,

I have a block, inside it there is a Register. That Register is also an output from that block.

I want to write Register into a simple ram, outside that block. when I do so, too meny errors appear.

A part from that block:

    function [gate_h,reg_out] = gate_cntrl_h(INDX,I1,V,reg_old)
    n = 8;                
    gate_h = zeros(1,n);     
    reg_out = zeros(1,n/2);

              switch INDX
                  case 0
                       reg_out(:) = 0;           
                  case 1
                       if(min(V) > VC_limit)
                           [C,I] = min(V);       
                           reg_out(I) = 1;
                       else
                           for j=1:length(reg_out)
                           if(reg_out(j)==reg_old(j))
                               reg_out(j)=reg_old(j);
                           else
                              [C,I] = min(V);    
                              reg_out(I) = 1;
                           end
                           end
                       end
      ...
      ...

      How can I write reg_out into an outside simple RAM ?
      when I do so, too meny errors...

for example..
Error in port widths or dimensions. Output port 1 of 'gate_cntrl/Single Port RAM/din' is a [1x4] matrix.
Component: Simulink | Category: Block error

Error in port widths or dimensions. Input port 2 of 'gate_cntrl/Single Port RAM/wr_port' is a one dimensional vector with 1 elements.
Component: Simulink | Category: Block error

Can someone help me to solve it ?

Thanks, Henry