Copying a name range


Am struggling here and i need help please.

I have defined a name range in the name box and it is B20:B30 and given it a name: Data. sometimes a new cells will be added in between and the range will be changed. i need to copy this range which is named Data from one sheet to another and whatever changes in the content of these cells to be changed in the target cells. please help how i can do that.

Thank you.