INCLUDE Instruccion. Help please

I created a file with extension .mqh. EA have to call for a several times with the #INCLUDE and avoid repeating the same code in different parts of EA.

When compiling the warning appears "file already processed" from the second instruction INCLUDE in the function program recognizes only the first instruction INCLUDE, ignoring the following. (I use at 8 times).

Help:
What I need to make all instructions INCLUDE work?
There is another way to call a piece of code and use it on several occasions?.

Thank you all in advance. I hope your solutions.
A greeting.