Form Control text box vertical alignment

Was just wondering if anyone could let me know how to activate the vertical alignment property on the form control text box (at the moment the ‘Vert. Alignment’ is greyed out, meaning I cannot change it from ‘Default’ to ‘Top’)

Vert. Alignment is not available with Text Type = Multi-Line:

Change Text Type to Single Line and it becomes available:

Thanks for letting me know, that has resolved this question, cheers