This seems to work for a number that you can use for “speed”. Off of where the “Moving?” boolean is set to true, drag in and SET the Frozen Y variable (by holding left alt while dragging), GET the Frozen Y variable and subtract it from a Get Actor Location, feed that to an absolute or ABS node to keep the number positive or negative, finally I found that adding 100.05 (float) brought the number to 120 which seems to be about average for walking speed for Unreal, feed that to the SET Frozen Y variable. feed that to a print string before it hits that reset for the top Do Once if you need it.