Simple question about functions

JP
2013 6 21
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Hello, just a simple question about functions. What I want to do is use a function in main code, and create a new variable from within a structure. My main code reads
practicefcn()
x=data1.x;
My function reads
function [ data1,x ] = practicefcn()
data1.x=5;
data1.y=4;
end
This gives me an error. Hopefully you see what I want to do. I want to create a datastructure where x = 5 within that data structure, but also I want to create a separate variable where x = 5, defined outside of the data structure. Thanks!

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