# The procedure
<a name="create-profile-procedure"></a>

Follow this procedure to set up a blue field with a channel parameter. This procedure assumes that you know how to create a [profile](creating-a-profile-from-scratch.md) and a [channel](creating-a-channel.md).

1. Position your cursor in a blue field. The **Parameters** panel opens on the page.

1. For the value of the field, enter a name for the parameter in double curly brackets:

   **\$1\$1my\$1parameter\$1\$1**

   You can set up the field as a mixture of hardcoded value and parameter value. For example:

   **udp://10.20.110.106:\$1\$1port\$1\$1**

   In the above example, you've created a parameter called **port**. 

1. As soon as you enter a correctly formatted name, the parameter appears in the **Parameters** panel.

1. In the **Parameters** panel, enter a validation value for the parameter. The validation value is a sample value that is correctly formatted. 

   When you create a channel using this profile, you will enter a real value for 

   For example, assume that the field always takes a URI and that the protocol must be RTP or UDP. A sample value could look like any of the following:

   **rtp://hostname.com:1234**

   **rtp://1.2.3.4.com:1234**

   **udp://hostname.com:1234**

   Note the following about these sample validation values: 
   + **rtp://** is a real value and is correctly formatted.
   + **hostname.com** is not a real value, but it is correctly formatted. 
   + **1234** is not a real value, but it is correctly formatted. 

1. When you save the profile, Elemental Live verifies that the validation value you've entered is valid.