While loop, how to loop with specific column in excel

I've an excel spreadsheet, where i have a weight for 30 or so conductors in a specific column. I imported that column in matlab and now i'm trying to create it into a loop. I'm not sure how to go about it. i was wondering if i can get some guidance

 example

the user pick a cable from the menu option that's given to him , matlab should go back in the excel sheet and pick the weight of the cable from the particular column cell

this is what i have so far

[numeric,txt,raw]=xlsread('typeofcables.xlsx') %importing the cable choice=menu('choose a conductor size','txt') % asking user to pick the cable

% now i want to loop it, because each cable has different weight

a=xlsread('typeofcables.xlsx','H:H')

f=a

while choice==0 weight_of_the_cable=a

end