index fields with custom gaps between terms

[Amin Raeiszadeh]

how is it possible  to add custom gaps between terms of
TextFiled in solr documents. for example between term
number 1 and 2 we need 200 gap and between term number
2 and 3 we need 1000 gap.
i can only send key-value pair as String to solr(then solr
index fields in different types according to schema ) and i can
not find a way to build field content manually and put them
to solr.
in lucene i create a custom position increment class and i
use it to add custom gaps between terms in token stream.