Calling a SubVI in MatLab script?

Can you call a subVI in MatLab script node, or does the SubVI 'node' always have to be used?
If this can be done, how is it done - can 'load' be used followed by the subVI address on the computer? 
Any help would be much appreciated!
Thank you in advance,
Dani

Thanks, I don't really understand what 'redundant indexing' is, as I'm unsure how to change the code! I've attached the coefficient table and a picture of the script if you could take a look that'd be great! I've commented out most of the code to see if I can just get one value out first of all. I'm unsure where to go from here - I can't figure out how to attach the VI by itself, sorry!
Thanks so much,
Dani
Attachments:
low T coeffs.jpg ‏233 KB
matlabscript.jpg ‏187 KB

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