OrientDB v2.1.2

I see from documentation that I can run a prepared query with parameters 
using:

OSQLSynchQuery<ODocument> query = new OSQLSynchQuery<ODocument>("select from 
Profile where name = ? and surname = ?");
List<ODocument> result = database.command(query).execute("Barack", "Obama");


However I cannot seem to run a command as a prepared command (I get Error 
on execution of command)

Map<String,Object> params = new HashMap<String,Object>();
params.put("vertexparam", "#12:0");

graph.command(new OCommandSQL("delete edge a_links_b from 
:vertexparam")).execute(params);

Is this possible?

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