FormatCurrency in SSRS

Hi,

I have value in data base like below

Score:
12.34
13.453
12.56
13.567

=FormatCurrency(Fields!.columnName.value,3)

It showing output like the above values as

$12.340$13.453$12.560$13.567

But I need to show up to 3 digits, if the value after decimal 2 digits it should show 2 digits only not 3 digits

Out put should be like:

$12.34$13.453$12.56$13.567

Help me how can i do that one....