Making some of the corners rounded

OmniGraffle
#1

Could someone suggest how I could make bottom two corners rounded in the graffle attached? Some of the straightforward approaches I tried interact in unwanted ways with my gradient/shadow

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corners.graffle (9.4 KB)

#2
  1. Draw a rectangle with rounded corners.
  2. Draw a rectangle with square corners and align them vertically.
  3. Select both and Unite Shape. (Pro Only)

Thanks,

Lanette

#3

thanks, that worked!