das geht mit javascript…
vielleicht hilft dir die Scripting Reference
http://wwwimages.adobe.com/content/dam/Adobe/en/devnet/indesign/sdk/cs6/scripting/InDesign_ScriptingGuide_JS.pdf
http://wwwimages.adobe.com/content/dam/Adobe/en/devnet/indesign/sdk/cs6/scripting/InDesign_ScriptingGuide_JS.pdf