Change Number (1 And 0) To Text

I am writing a code which should generate the letters m or f (male/female) in A2:A21. I am able to generate random 1's and 0s, but now i can't convert them to the letters. Below is the code (note: i know it might not be the smartest way to do this, but to keep the same datastructure which i have in previous coding, i would like to keep it this way)

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t = 1
Range("A1").Select

Low = 1
High = 2

Do

t = (t + 1)
ActiveCell.Offset(1, 0).Select
value= Int((High - Low + 1) * Rnd() + Low)
ActiveCell.Value = value
Loop Until t = 20

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