Concatenating string values together

[ngosz4074]

Hello,

I'm concatenating a value - with the business rule if the length is greater than three characters, then place a decimal point in the middle, then concatenate the remaining text.  Below is my formula

=IF(LEN([code] > 3),concat(mid([code],3,1))&'.'&concat(mid([code],4,5)),

)

The Expression is 'OK', but I get an \\Error in Calculation as a result.  What am I missing?

Thanks in advance

[m_woolf]

You closing parentheses for the LEN function should be after