Use Wildcard Operator

There are many ways to do this, pleaes try following:

1:

Using LIKE with Wildcards

1. Add a filter to your dataset or tablix

2. Set the filter expression to your column name

3. Set the operator to like

4. Set the value to: BXC%

Expression: [YourColumnName]
Operator: Like
Value: BXC%

2:

Using LEFT Function

1. 1. Add a filter to your dataset or tablix

   2. Set the filter expression to:

      text

      =LEFT(Fields!YourColumnName.Value, 3)

   3. Set the operator to =

   4. Set the value to: BXC

3:

Using InStr Function

For more complex pattern matching:

Expression: =InStr(Fields!YourColumnName.Value, "BXC")
Operator: =
Value: 1

This ensures "BXC" appears at the beginning (position 1).