Report Explorer - Size to Section Height¶
This choice increases the height of a field to the same height as the section. This is very useful for vertical lines that need to be made as high as the section they are in.
Start making a vertical line¶

Right-click the line and choose "Size to Section Height".

Combine this with variable height for sections that contain a variable height field/object, and the height keeps the same height as the section that got bigger through the variable height field.