<table cellspacing='0' cellpadding='0' border='0' ><tr><td style='font: inherit;'>Dear All,<br><br>I am encountering a strange problem when I did a macro with PROC IML code embedded inside. The idea is actually a very simple one: <br> <br>%macro EM(inpar=,indata=,maxiter=,toler=);.....%mend. <br> <br>I only need to pass 4 macro variables into PROC IML. part of IML code using the macro variables.<br><br>Start estimation(probx1,prob,mu0,mu1,std0,std1) global(y,x,esrd,trt);<br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; ***more code***;<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; do until(L[step]-L[step-1]&lt;&amp;toler | step &gt;=&amp;maxiter);<br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; step=step+1;<br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; /*&nbsp; E-step&nbsp; */<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; prob_subj=Estep(probx1_cur,probx0_cur,mu0_cur,mu1_cur,std0_cur,std1_cur,<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; xeffect_cur);<br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; /*&nbsp; M-step&nbsp; */<br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; update=Mstep(prob_subj,probx1_cur,probx0_cur,mu0_cur,mu1_cur,std0_cur,std1_cur,xeffect_cur); <br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; ***paramters used in e-step will be updated;<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mu1_cur&nbsp;&nbsp;&nbsp; =update[1:4];<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; mu0_cur&nbsp;&nbsp;&nbsp; =update[5:8];<br>&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; std1_cur&nbsp;&nbsp; =update[9:12];<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; std0_cur&nbsp;&nbsp; =update[13:16];<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; probx1_cur =update[17:20];<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; probx0_cur =update[21:24];<br>&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; xeffect_cur=update[25];<br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; end;<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ***more code***<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; finish;<br><br><br>&nbsp;However, whenever I ran the code, it would not give any sign of being executed (I checked log file- no blue colored comments).Then I tried to run other unrelated codes to see if SAS was dead and nothing happened . I had to quit SAS. This problem happened every time. <br> <br>The strange thing was that after I use 4 %let statement to pass macro variables to PROC IML, the code would run without problem. I am not sure why a combination of %MACRO and PROC/IML will have such problem. I did see a lot of similar codes and the one I created above is nothing special though. <br> <br>Any suggestion will be really appreciated!<br><br>Many thanks,<br><br>Vincent<br> </td></tr></table><br>