UBB.Developers Forums UBB.threads 6 V6 Modifications Archived Mods ExtraInfo 1.0 (for 6.0.1)

I dont understand this step:

Step 1.1:Find a line that looks like this (at line 638):

code:

      SELECT t1.B_Number,t1.B_Username......

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And change it to this, [:"red"]change the U_Extra1 to the extra field that you want to use.[/]

code:

      SELECT t1.B_Number......,t2.U_Number,t2.U_Extra1,t2.U_Extra2,t2.U_Extra3,t2.U_Extra4,t2.U_Extra5

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I dont understand what what im supposed to change t2.U_extra1 to...