Pass multiple INT in stored procedure

Hi,

I have taken over ownership of a SQL database with a number of Stored Procedures and i'm trying to work out how some of them work.  One of the SP has the following:

IF @Options & 1 = 1 EXEC Action_All @CompanyID
IF @Options & 2 = 2 EXEC FlowAll @CompanyD, @UserID, ''
IF @Options & 1 = 1 AND @Options & 2 = 2

Select allOpen in new window

When I execute the SP in the Management Studio I have 4 fields available one is the @Options.  

If I enter 1, the SP executes.  If I enter 2, the SP executes.  However I need to pass 1 & 2.  How do I do this?  I have tried passing:

1,2
1 & 2
'1,2'

Thanks