[TYPO3] Flexform link how to use in plugin

[Kay Strobach]

have a look in the tca configuration
http://typo3.org/documentation/document-library/core-documentation/doc_core_api/1.2.0/view/4/2/#id4104960

--snip--
<pages>
   <TCEforms>
     <exclude>1</exclude>
     <label>LLL:EXT:lang/locallang_general.php:LGL.startingpoint</label>
     <config>
       <type>group</type>
	<internal_type>db</internal_type>
         <allowed>pages</allowed>
         <size>3</size>
         <maxitems>22</maxitems>
         <minitems>0</minitems>
  	<show_thumbs>1</show_thumbs>
     </config>
   </TCEforms>
</pages>

--snap--
Regards Kay