I've got a bar chart that takes values from cells A1:B5

In C1 and in D1 I've got two combobox (created with data validation method),
each one allows me to choose 4 different parameters. By changing these
values, the values in A1:B5 and the chart changes too. Now, for every
change of data in C1 and/or D1 I copy & paste the chart to another sheet; in
this situation I've got only ONE chart
Is there a way to obtain a *new* chart every time I change parameter in C1
and D1, so that I can avoid to do the copy & paste the single chart manually
(that is too much time-expensive) and put the it into another sheet ?

Thanks in advance