How can i sweep over a variable that belongs to a structure

i have a variable in a structure in matlab e.g. EQ.FFE

FFE is the number i need to sweep like FFE=1:2:21.

I need to create a "for" loop in the code for that. How can i do it? it seem that syntax

"for FFE=1:7" or "for EQ.FFE=1:7" do not work

Answer 1

[Walter Roberson]

for FFE = 1:2:21
   EQ.FFE = FFE;
   ...... 
end