Insert only some data in row of Excel File

[CamiCat]

Hello,
I have created a Datatable in an Excel File.
The table in Excel is partially completed.

I need to insert the remaining data in the Excel file.
I tried in this way:

but it gives me an error: for each row in Tabella_Excel_Trovate : Collection was modified; enumeration operation might not execute.
How can I overpass this problem and insert the remaining data in the Excel?
Thank you so much friends,
Camilla

[Manjuts90]

@CamiCat create datatable with those 4 columns, write to excel with starting range as D2. It will work

[rajsekhar (r@j)]

you Can assign variables like row(column number)= value or row(“firma”) =value in the for each