Attributes References

Hey guys.

I got this excel sheet with a bunch of numbers, I want to create attributes in my drawing wich references to those numbers on the sheet.

For an example.

I got a table like

Wall A - 2,20

Wall B - 1,80

Wall C - 2,00

And in my drawing, I got Wall A, B and C. I want the attributtes from wall A, B and C, to reference to the numbers on the excel sheet. Like, whenever I update the Wall A, from 2,20 to 2,40 for an example, the attribute will be updated as well.

Thanks alreay for your attenttion.