Problem with Decimal numbers when I try to import them from Excel to Visual Basic

Hi, I have the following problem...

When I import data from an excel that are of this form 2,3 then everything is ok.
But when I import data of the type 0,08 visual basic imports 0 and not 0,08.

This is how I import the data

Dim oExcel as new Excel.Application
Dim oWorkbook as new Excel.Workbook
Dim oWorksheet as new Excel.Worksheet

Set oWorkbook = oExcel.Workbooks.Open(folderPath & "\test.xls")
Set oWorksheet = oWorkbook.Worksheets("sheet1")

tempVar=oWorksheet.range("nameOfCell").value

What is the problem?

I would really appreciate an answer!Thank you