I made a list. When I click on a cell, a drop down list appears with the numbers 1,2,3 and 4.

What I want to do is. If a cell = the value 500000 then what appears in the list is say for example 2,3,4 and if the value in a cell = the value 300000 then the values that appear in the drop down list is 1,2,3,4.

Any way I can do this?