include type in another structure

Hi,

i am declaring on structure like

begin of struct dd,

first type c,

second type c,

end of struct dd.

and i want to use this structure into second on like this

begin of struct2,

icon type icon-id,

include type dd,

end of struct2.

It shows no errors but the problem is to access the second structure like this

data : wa_test type struct2.

wa_test-first = something.

it shows the error message "can't find field first in sructure".

Can you please specify how to assign the value into include fields.

Regards

Dhirendra