a question about the command "getitemtype"

If I am in the queue3, I want to get the item type in the queue4.
How do I write the correct command?

I already try the following stupid code,but it can't work.

treenode item = parnode(1);
treenode current = ownerobject(c);
int port = parval(2);
treenode cc = node("/Queue4",model());

getitemtype(cc,item); or getitemtype(item,cc)

thanks for your help in advance.

The item in your code is the one that fires the trigger - I assume in Queue3.

Once you have the pointer to the other queue (6 or 4 in your example?) you can use rank, first or last to find one of the items in the other queue, which could have any number within it.

int type=getitemtype(rank(cc,1));

or

 
treenode otheritem=rank(cc,1);
int type=getitemtype(otheritem);

See the command help for the use of rank, first and last

sorry,there's a mistake in my problem description,I correct it .thanks for your help.