T-SQL LIKE Expression as SSRS Perameter value?

Trying to figure out how to replace a WHERE x LIKE "y" clause in a recordsource with a parameter.

Instead of switching various WHERE statements around, such as WHERE ac.number LIKE 'R% [EL][IR]-%'
or WHERE ac.number LIKE 'R% EI-%' ,
I would like to replace them with WHEREac.NumberLIKE@revenueSource and then set the possible values of @revenueSource to strings like 'R% EI-%' or 'R% [EL][IR]-%'.

The problem is how to express  'parameter choices like R% EI-%' or 'R% [EL][IR]-%' in a format that SSRS will accept as a valid parameter value. Any advice?

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