> When I use > IF ASCAN(aArray2,myfield) > instead of > FOR i = 1 TO ALEN(aArray2,1) > IF myfield = aArray2(i,1) > I get a Data Type mismatch error. I know that my array contains different > data types, since it comes from AFIELDS() but the help for the ASCAN > function implies that it shouldn't matter. Am I missing something? ASCAN() returns a numeric value, indicating the 'cell' in the array that contains the right value. You're checking it as if it returns a logical. Your code should read: IF ASCAN(aArray2,myfield) # 0 /Paul