Querying Dynamic Fields.. simple query not working

[Ninad Raut]

Hi,
when I do a *:* query I can see the dynamic field as show below:
<str name="ne_.*">{Germinait=0.7}</str>
but when I try to query for the same like ne_Germinait:0.7 I get zero
records.
All the other field which are not dynamic can be easily queried.
Can some one please tell me how to query for dynamic fields?
Thanks.
Ninad.