Error while updating excel using "Execute Non query" activity


I have a scenario, where I am trying to update excel using below query -

“UPDATE [“+SheetName+”$] Set [STATUS] =‘“+strStatus+”’, [COMMENT] = ‘“+strComment+”’ Where [LEVEL] LIKE ‘“+row.Item(“Check Level”).Tostring+”’ "

For activity -

Connection string used - “provider=Microsoft.ACE.OLEDB.16.0;Mode=ReadWrite;Data Source='”+strAuditTrailPath+“';Extended Properties=‘Excel 8.0;HDR=YES’;”

For excel version and excel type are as below-

When I execute this activity with above information I have error -“Object reference not set to instance of object” even though I hava values for all variable present in query and connection.

Any suggestion would be helpful