Need help pausing print at layer for magnet drop.

I've never had to do a print pause in gcode for all the time I've been printing. I can see that variable_pause_print_park_in is a thing in the macros, specifically moving the toolhead to the "back". What would be an example gcode for pausing a print at 1.4mm height, toolhead back of printer? Using a V-minion.
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