Y Axis Number Format Not Changing

[annumff]

Have a button driving which metric is displayed in the line chart.  1st measure is dollar formatted with 2 decimal places.  2nd measure is whole number with no decimal places.  The value labels on the chart adjust but the y-axis stays dollars.

1st master item expression

num(sum([Order Amount]), '$#,##0.00', '.' , ',' )

2nd master item expression

num(count(distinct [Order Number]), '#,##0', '.' , ',' )

Button Metric 1 measure is master measure with Num( [Gross Sales Price]), '$#,##0.##', '.' , ',' )

Button metric 1 measure is master measure with num(count([Order Number]), '#,##0', '.' , ',' )