Hex55.exe fatal error: missing value after comma in reg_config option

Hello:

I am trying to run the hex55.exe tool with the following script and am getting  fatal error: missing value after comma in reg_config option

.-boot                                                 /* Place all initialized sections in image */
-v5510:2                                           /* Set processor type */
-serial8                                           /* Set Flash system memory width */
-e _c_int00
-reg_config 0x1c00, 0x2162      /* Set slow clock */
-delay 0x100                                /* wait a wile 256 clocks */
-b                                                   /* Select format binary */
-o led.hex                                    /* Name hex output file */
-map led_blink_hex.map        /* Name hex utility map file */
led_blink.out                               /* Input COFF file */

Can anyone tell me whats is missing about the value 0x2162 in -reg_config 0x1c00, 0x2162 

Thanks

Brian