Grasshopper boundary surfaces input curve

hello all! I wanna make boundary surface with 2 closed curves. but I can input only one curve into boundary surfaces command. if I connect other curve, the previous connection is going to be disconnected. I need your help! thank you

Use a Merge component to merge all your curves together, or alternatively you can use the Shift key while dragging the output of the second curve into the input of the Boundary component. This way both curves will be attached to the input of the Boundary component.

thanks for newbie!!

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