Thank you Tony.
When implemented like you describe, the input shows the data in the correct format.
But there seems to be a problem with the serializeRowData function. After edit no data is sent to the server, it just calls the URL without posting anything. Without serializeRowData it does post the data but indeed still in the formatted style (i.e. 12,34 while it would be cleaner to receive 12.34 at the server side).
Using console.log statements I could see that the function is called correctly, but somehow the grid afterwards does not like what is returned.
Since the docs state that this function should return the serialized data,
I tried returning JSON.stringify(row) but that made no difference.
For now I can do the unformatting (12,34 to 12.34) at the server side before saving to the database.
Of course it would be nice to get serializeRowData working correctly.
