# Using #include <> in SetCustomBacktestProc

I have no problem in using the SetCustomBacktestProc by calling an external afl:

``````SetCustomBacktestProc( "C:\\AFL\\obFn.afl" );
``````

I am also referring to some external afl file in my code, by using the function #include <>:

``````#include <common.afl>
``````

I also want to enjoy using the standard include path in SetCustomBacktestProc, instead of writing the full c drive path.

Can I have something like

``````SetCustomBacktestProc( #include<obFn39bb.afl> );
``````

Thanks!

#include is pre-processor command and as such can not be used inside functions calls.

You can use relative paths instead

``````SetCustomBacktestProc("Formulas\\CBT.afl");
``````