[U-Boot] Regarding HUSH support in uboot

Hi How do we know whether hush shell capability is supported or not in the command shell.I have enabled CONFIG_SYS_HUSH_PARSER in in config file. I am trying to write simple script like below myname=`test` if $myname=test then echo "test" else echo "failed" fi I am getting the following error "unknown command test". Can anybody please let me know if the hush shell is eanbled or not. Thanks Amruth p.v