How to save every iteration of a structured array in a loop in a function?

I am using a fairly complex function to stabilize images that was written by Daniel Bourgault & others to stabilize imagery https://gitlasso.uqar.ca/bourda02/g_rect.

It works perfectly, but I need to develop a translation matrix from this program, so it is important that I can write the translation variables out to the workspace or save them and load them later. I am having trouble writing out more than just one iteration. I have looked up several ways of doing this, but I have not had much success. I am wondering if it is because I am missing something necessary when using "for iter = 1:niter", or if I should be saving this structured array from another function?

Here is the for loop where the variable is called in from another function. I need to save every iteration of "motion", which is a structured array with two variables (A and T).

I have uploaded the two main functions out of this set that I am interested in (g_stabilize(primary function) and g_videostabilize). Thank you for the help!

for iter = 1:niter
        [motion,stable] = g_videostabilize(frames,roi,L);
        frames(1).im    = stable(1).im;
end

[Bob Thompson]

Is your indexing on frames always (1)?

[geog170]

Yes, as far as I know.

[Walter Roberson]

frames(iter).im    = stable(1).im;

[geog170]

Thanks Walter, sorry for the delay in responding, our servers went down and I couldn't access matlab until just now. Adding in a line to save the output is still only resulting in the motion of one image being stored instead of all the images as it loops through. Perhaps I am just not trying to save the structure at the correct location in the code.

[Walter Roberson]

for iter = 1:niter
        [motion,stable] = g_videostabilize(frames,roi,L);
        frames(iter).motion = motion;
        frames(iter).im    = stable(1).im;
end

[geog170]

The motion array is still only saving with one value in it. I have tried saving in other places as well with the same result. The code applies the translation to an unlimited number of images so I am not sure why I am not able to write these values out.

[Walter Roberson]

for iter = 1:niter
        [motion{iter}, stable{iter}] = g_videostabilize(frames,roi,L);
        frames(iter).im    = stable{iter}(1).im;
end

[geog170]

That is causing the error, "Struct contents reference from a non-struct array object. " on the following line

im_stable = g_warp(im1,motion.A,motion.T);