front month for zg and zb; IB???

I use interactive brokers and am not getting data for gold and bonds. zb and zg. It gives a closing price for zb but not even that much for gold

 

In commodity parlance, it's "H" and "G" respectively.

 

Thanks but with IB you dont type in the month you just pick it from a list, I must not have data for it I had the right ones will have to look.

 

ok it cost $61 so Im not getting it as I dont trade them....so what are some good dold and bond etfs.