Power Query Editor copy value to new column

Hi There

So I have a table called : Stock Database

Within this table there is a column (field) called : Total Value

Now this field a calculated field from sharepoint online list (the data source)

Now what i on Power Query Editor, to copy the values from Total Value to a new column (field) within this same table. However the copy process must be a step process so that its dynamic on each refreshing of this table. Now, since this field "Total Value" a calculated fields from sharepoint online list, so the copy must should be like a Excel, special Paste value to only copy the value and not the formula.

The new custom column called should be called: TValue

Below a screenshot current table and field

Please help

Regards

shabeer