SpinButton To Increment By Decimals Not Whole Number

I’m using this code to change the value of an active cell with a spinner named: 1.

Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Dim lNum As Long
If IsNumeric(Target) Then
lNum = Target
If lNum = Target And Target >= 0 Then
With Me.Shapes("1").ControlFormat
.LinkedCell = vbNullString
.Value = Target
.LinkedCell = Target.Address
End With
Else
Me.Shapes("1").ControlFormat.LinkedCell = vbNullString
End If
End If
End Sub

The problem is, that whenever I click or activate a cell its value automatically changes to 0. The spinner works just fine modifying the value of the activated cell. The problem is that this code somehow causes all the decimals such as 0,3 0,1 or 0,8, entered manually, to change to 0. This way only integral numbers, such as 1, 45 or 100 are accepted. I must truly say I have no [no need to swear - mod] idea how to fix these problems meaning the automatically inserted 0 and the fact that the sheet doesn’t accept decimals changing them to an integral number.