BASIC+Calc+HSQLDB: How to move registered database

From the code:

Option Explicit

Function ConnectDatabase(dbFilename As String) As Object
	Dim dbContext As Object : dbContext = createUNOService("")
	Dim oDataSource As Object : oDataSource = dbContext.GetByName(dbFilename)
	ConnectDatabase = oDataSource.GetConnection("","")'>>("Username","Password")
End Function

Sub TestDatabase
	Dim db As Object
	db = ConnectDatabase("LibreOfficeCalcSampleCodes_HSQLDB")
	MsgBox "Connection completed"
	MsgBox "Disconnection completed"
End Sub

Initially , registered LibreOfficeCalcSampleCodes_HSQLDB.odb was in folder /home/fedora002/Documents and the database could be connected.

Then, I moved the database to subfolder /home/fedora002/Documents/BASICMacro temporarily.

And finally I moved the database back to the initial folder /home/fedora002/Documents .

There was an error message:

Why can’t the registered database be moved to other folders even when it was moved back to the initial folder ?

| Fedora 31 Workstation KDE Desktop Spins | LibreOffice |

The error states Basic can not find such LibreOfficeCalcSampleCodes_HSQLDB name in registered DB names list. Maybe some misspelling in DB name while moving? Also check if the name is in registered DB list.