Update excel cell with Patch - float format issues

[wolfrat]

I'm having issues to get the correct number into the excel cell. While Updating an excel cell with Patch using this code (It seems to be the wrong format.):

Patch(
tab_arbeitspaket;
LookUp(
tab_arbeitspaket;
__PowerAppsId__ = ThisItem.__PowerAppsId__
);
{Fortschritt: Value(lbl_Test.Text;"en")}
)

I have a value of 0,25. This probably should end in a Text like "0.25" to have a correct update. 

(When I'm typing float values into excel manually, I do use a point, not a comma.)

Last time I had format issues, @timl came up with the right solution.

Kind regards and thanks for help from Swiss mountains.