Drop down list - pick range of values

0

I have a form with drop down list.
This drop down list is using static list.
Static list have 8 "items".
Steps are A>B>C>D

I would like to use items 1-3 in step A and B where index ID of stem is for example 111 and 112,
and if is in step C or D then the list have only options 4-8.
of course i would like to reset value a drop down list when enter to step C .

BTW: I don't know SQL yet ...
and in editor in filter there is no if then else .... so ....

it works only in first step ... but later not ...
if is only case1 then is 3 items works to the end ... A to D
but if I have got case1 OR case2 then .. appears in step B All 1-8 not in C ...

---EDIT---

OK, it works on A [1-3] and C [4-8]
B have got all 1-8 ... so ... I will try with another OR .... and check