[texhax] calling own making symbol

[wa2n]

Hi all
I already make symbols using MF, the source look like :

beginchar(hex"00",5u#,4u#,0); "my simbol1";
....
endchar;
end

That symbol already have *.gf extension.
The question is how I call that symbol into latex, if I using " hex"00" 
" to naming the symbol ?

Thanks

Wawan-Jogja-Indonesia