How to change matrix column name in reporting service sql sever 2005

I'm trying to put the column name on a matrix in Reporting Service wiht sql server 2005, but i can't...
The example behind:

Jan Feb marCH
jose 71789678 2608923 677122 343434

I need

Name ID Jan Feb Mqarch
jose 71789678 2608923 677122 343434

If you know how..pliz help me

[301 byte] By [karla_reymer] at [2008-2-5]

Visual Studio

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