Invalid Property error when calling external library

My program is to check the battery status. The following commands were used to call external library file which was created by C#.

~~~~~~~~~~~~~~~~~~
Sub Construct_Obj
...
AddObject("BATStatus", "LXEAPIMX7Wrapper")
BATStatus.New1(cPPC)
End Sub

Main App_Start
...

MainVolt.Text = Main_Battery_Volt
...
End Sub

Sub Main_Battery_Volt

ErrorLabel(errBackupBatteryVolt)
If (BATStatus.MS_GetSystemPowerStatusEx2 = True) Then
BackupVoltValue = BATStatus.sBackupBatteryVoltage
End If
Return BackupVoltValue
errBackupBatteryVolt:
Msgbox("LXEApi BackupBatteryVolt return error: " & BATStatus.sWin32Error)
End Sub
~~~~~~~~~~~~~~~~~~~~~~~

When I compile this code, compiler give error

"invalid property in line If (BATStatus.MS_GetSystemPowerStatusEx2 = True) Then "

Please help me to know the cause of the error.
Thanks & best Regards

Does it compile if you just write:

It's foolish mistake

:sign0013: It can't compile because of different names in C# file. Thanks