SUM related children doesn't update parent

[Stephane1]

Hi,

I’ve got one “parent” Projects table which has “children” Timesheets table.
I want to have the sum of a price column in my children table updated in real time in a price column of my parent table.

Whatever formula I wrote in parent column like :

• SUM([Related timesheets][Cost])
• SUM(SELECT([Related timesheets][Cost],TRUE))
• SUM(SELECT(timesheet[Cost],([_ThisRow]=[Project])))
  I need to edit the project parent then save it to have the price column updated when I add or edit a timesheet child.

Is it the normal behaviour ? If so, then how automatically update the parent column ?

Or is it a bug, again ?

Thanks for your help