Code
'Library1 Module1'
Option Explicit
Sub TestConnectingEmbeddedFirebird1
	Dim iBox%
	iBox = MB_YESNO + MB_DEFBUTTON2 + MB_ICONQUESTION
	If MsgBox ("Do you want to connect embedded Firebird database ?", iBox) = IDYES Then
		On Local Error GoTo CloseConn
		Dim db As Object : db = Library2.Module1.ConnectDatabase("firebird0")
		MsgBox "Embedded Firebird database connected"
		DisconnectDatabase(db)
		MsgBox "Embedded Firebird database disconnected"
	Else
		MsgBox "No embedded Firebird database connected"	
	End IF
	Exit Sub
CloseConn:
	MsgBox "Error " & Err & ": " & Error$ & " (line : " & Erl & ")"
	DisconnectDatabase(db)
End Sub
Sub TestConnectingEmbeddedFirebird2
	On Local Error GoTo CloseConn
	Dim db As Object : db = Library2.Module1.ConnectDatabase("firebird0")
	DisconnectDatabase(db)
	Exit Sub
CloseConn:
	MsgBox "Error " & Err & ": " & Error$ & " (line : " & Erl & ")"
	DisconnectDatabase(db)
End Sub
'Library2 Module1'
Option Explicit
Function ConnectDatabase(dbFilename$) As Object
	Dim dbContext 	As Object 	: dbContext 	= createUNOService("com.sun.star.sdb.DatabaseContext")
	Dim oDataSource As Object 	: oDataSource 	= dbContext.GetByName(dbFilename)
	ConnectDatabase = oDataSource.GetConnection("","")'("Username","Password")
End Function
Sub TestConnectingEmbeddedFirebird1 or Sub TestConnectingEmbeddedFirebird2 sent the error message:




How can we call Function in other Library (and in order to connect embedded Firebird database) ?