The Set-Relays Action lets you set the state of mulitple outputs using a channel mask and a states mask. The Channel Mask allows you to select which channels will be set to the given State Mask. The State Mask and Channel Mask accept a binary mask. This can be represented as decimal or hexadecimal. To specify the mask as hexadecimal simple put '0x' before the value. For the example above, the decimal value of 7 equals three outputs which are 1,2 and 3. 7 is also the hexidicmal 0x07