setting property of a locked node

[ruchi goel]

Hi,
   Can a session which has locked a node A , set a property  p of  
node  A , without unlocking ?


Is this possible ?
get A
lock A
A.p("x")
save A



I get an exception when I try to do above . Here my property p is 
actually lockToken which I want to persist along with the node as soon 
the node gets locked.


Help appreciated.

Thanks,
Ruchi