Getting mouseclick drag to hold shift while doing the action?

[Popeye1 0]

MouseClickDrag("left", 85, 340, 50, 668)

Could someone tell me what I need to write to get this code to hold shift when it drags the item?

[exodius 1]

Check the Helpfile for the Send command (hint: what you're looking for is below the table with all the different Send Commands and Resulting Keypreses)