[TYPO3-Solr] Search for internal id

[b.riezler at pixel-ink.de]

Hello,

i have an string wich is built like this ' "xx-20130311-4082" and i like to find only the entry with this string in it's field.
I set up a dynamic field and tried *_stringS and *_textS, the stringS Field doesn't show any results and the textS shows to many entrys.

Wich field should i go with to get only that one entry with that internal id?

regards
Benjamin