Call a table from the workspace into my main file

I have a table called Male_Data.

I'm using the following line of code to obtain a random value from FileName

random_Name = datasample(Male_Data.FileName,1)

I have in my workspace files that match the names in the filename column

Each of these files have 12 columns, I want to plot the first column of it, for that I'm using the following line of code

plot(MUSE2018011412185336000.VarName1, 'k')

And I'm plotting these columns by manually typing the file. I want to write a few lines with which I can automatically plot the first column of the file. I tried

plot (random_Name)

But it doesnt work since I haven't associated the table to that name and the value under random_Name is a categorical value. I'd highly appreciate some help in automatically relating this categorical value with a table