Dynamic FIELD size in array?

[David Pais <David.Pais@RNB.COM>]

Code:

create-array
     name=row_data       size=40
     field=control_num:number  field=level:number
field=div_row_data:number:{num_col_for_div_data}

Question:
Is there ANY way to replace substitution variable {num_col_for_div_data}
with #num_col_for_div_data   variable which is a result of SELECT paragraph?

Thanks
Dave