Hi

I'm new to Reporting Services and need some help with expressions. My problem is this.

I have a Matrix table with two calculated columns of data where the values are both expressed in hh:mm. I need to include a 3rd column that calculates a percentage (A / B)*100. The expressions that populate each calculated field are shown below, with an example of the field value that is being displayed - as a new User I'm unable to attach real examples.

**Col A (Time Spent)**

=int(sum(Fields!Time_Spent_Minutes.Value * 60)/3600) & ":" & int((sum(Fields!Time_Spent_Minutes.Value * 60) Mod 3600)/60)

**Col B (Technician Availability)**

=Lookup(Fields!Support_Rep.Value, Fields!Support_Rep.Value, Fields!Field12.Value, "DataSet2")

Col A Col B

153:27 173:20

Hopefully, someone will be able to point me in the right direction - I've tried combining the two expressions, and also combining a shortening the Col A expression (sum(Fields!Time_Spent_Minutes.Value) but they both display an #error.