>How can I change a 'U' type() string into a 'C' type string?
>Thanks!

?
If type returns 'U' then whatever you ask for is not defined

Example:

CLEAR ALL
?TYPE('muh') &&no muh
muh = 'HU'
?TYPE('muh') &&muh contains a string
muh = 0
?TYPE('muh') &&muh contains a numeric

test = 'puh'
?TYPE(test) &&no puh
test = 'muh'
?TYPE(test) &&muh still contains a numeric

?TYPE(puh) &&error out, no puh