[SuperS_5]

There are 2 ways to change the increment behavior.
1) Right click on control, and click on "properties." Change the options under the "Data Entry" Tab.
2) Use a property node. This is a advanced option, and you should understand the concept and limitations of property nodes before using them. If using them by references, (not directly linked) Then the behavior of what you see is possible when not implemented correctly.

If this did not help, please post example code as Ryan Gordon has already requested.