Find Max Value After Odata Query & Insert

Hi,

I have a Power Query which references an OData data source and creates a table within Power BI, but I would like to create a logging table based on the timestamp returned within the dataset:

let
  RecordsPerCompanyFct = (CompanyName,TableName) => let 
  Source = ODataBaseQuery,
  SelectCompany  = Source{[Name="Company",Signature="table"]}[Data],
  FilteredRows = Table.SelectRows(SelectCompany, each ([Name] = CompanyName)),
  UnpivotedOtherColumns = Table.UnpivotOtherColumns(FilteredRows, {"Name"}, "Attribute", "Value"),
  TargetTable = UnpivotedOtherColumns{[Name=CompanyName,Attribute=TableName]}[Value],
  TargetTableWithCompanyName = Table.AddColumn(TargetTable,"Company Name",each CompanyName)  // Add "Company Name" column to result
in
    TargetTableWithCompanyName,
    Custom1 = RecordsPerCompanyFct
in
    Custom1

Once the dataset has returned I would like to find the max value in the Timestamp field and insert it into a logging table - Last Record. The logging table should consists of two fields (TableNo Type Int & Max Timestamp Type BigInt).

Any help welcome