There is a difference in popup error message produced by spinner component.
If and error is generated server side on (i.e. exceeding min/max constanint on spinner here org.zkoss.zul.SimpleSpinnerConstraint#outOfRangeValue)
then

OUT_OF_RANGE min ~ max

message is produced.
If the message is generated on client side (i.e. exceeding integer range, Spinner.src.js#coerceFromString_)

OUT_OF_RANGE min - max

message produces (notice the difference ov using - vs ~ sign)