Get error when run get-swisdata $Swis

I got this error when run get-swisdata $Swis "select Solarwind_Modules.dbo.Modules.Name from Solarwind_Modules.dbo.Modules"

Get-SwisData : Source entity [Solarwind_Modules.dbo.Modules] not found in catalog

At line:1 char:13

+ get-swisdata <<<<  $Swis

    + CategoryInfo          : InvalidOperation: (:) [Get-SwisData], FaultException`1

    + FullyQualifiedErrorId : SwisError,SwisPowerShell.GetSwisData

I query this line "select Solarwind_Modules.dbo.Modules.Name from Solarwind_Modules.dbo.Modules" in SQL Server Management Studio, it works, but whole command in PowerShell, it doesn't