Caption made up by Concatenated text

Hi!
I am making a user form for a loan ammortisation table and need to include a label control with a caption made up by the concatenated text of:
“Scheduled (” & paym_freq & “) Payments: £” & R. [Where the payment frequency can be monthly, quarterly, or yearly and the first installment amount is R)
for example, resulting: Scheduled (monthly) Payments: £192.59, where paym_freq and R are the main (i.e. VBA variables) repayment frequency and repayment amount (rounded down to 2 decimal places), respectively. So at the start up of the userform, the caption should be based on the values already present on the spreadsheet. However, during run time of the User Form, the variables entered any changes of the controls defined above should trigger the recalculation of the R value and, in turn, the re-evaluation of the caption text of this label.
Would really appreciate some help!
Thanks in advance