You can't transmit all four variables in one transmit command. However, what you can do is create a string that pulls in the values of these four variables and then transmit that single string. You could either use the strcat command to stack all of the strings together, but I think the strfmt command would work better for you since you can incorporate all variables in one command rather than having to use multiple strcat commands (or converting other datatypes to strings). If you take a look at the strfmt command, I think you'll find it's the command you want to use. You can also find a little more information about how to format your string by clicking on the Formatting Text and Data link in the discussion of the strfmt command.