For the volume curve automation, Is there any absolute value adjust rather than relative value adjust when editing the a

Cubase
1

For the volume curve automation, Is there any absolute value adjust rather than relative value adjust when editing the automation curve?

For example, if the different between the low point and high point is 2db, after raised or lowered, the difference is still 2db.

2

Select all automation points and type a value in the info line.