Variable parameters {#var#} are used so that non-static or changeable information like OTP number, name, product name, etc can be easily passed in messages.
Each variable parameter {#var#} will allow you to enter 0 – 30 characters. This means that spaces and punctuations are not counted.
So, if you have any variable data that is more than 30 characters, you can include {#var#} as per what you feel will help you accommodate the data without spacing between 2 variable parameter markers.
Please keep in mind that the scrubbing is done based on 60 – 40 %, with variable content allowed being, 40% of the whole message.