Visual basic does not recognize xlFormulas, xlPart, xlByRows, and xlNext in the following code, I get squiggly lines saying that they are not declared. Can anybody Help with this?

Code:
   
objExl.Cells.Find(What:="Survey Type", After:=objExl.ActiveCell, LookIn:=xlFormulas, _
            LookAt:=xlPart, SearchOrder:=xlByRows, SearchDirection:=xlNext, _
            MatchCase:=False, SearchFormat:=False).Activate()