Problem with LOOP AT... IN...

Hi,

in ECC5 version i could write this :

LOOP AT lt_dd07t INTO l_dd07t WHERE domvalue_l IN l_range_list.

...

ENDLOOP.

Now after upgrade to ECC6 this code don't work i have the following error :

'L_RANGE_LIST' does not have the structure of a selection table.

How can i do to repair this ?

Thanks.

Cheers