# Creating parameters

> Create string parameters for a test case, with naming rules and default value and hint fields.

You can create parameters for each test case within a test set. You can add a maximum number of 250 parameters, each required to have a unique name in the context of a test case.

Parameters can only be of type **String**. Parameters that you create in the **Parameters** tab of a test case can be used only for manual test executions.

## Steps

1. Open the test case to which you want to add parameters.
2. Go to the **Parameters** tab.
3. Select **Create Parameter** and fill in the following fields:
   * **Name**: Give the parameter a unique name. When you name the parameter, you can use letters, numbers, spaces, and the following characters: `-`, `_`, `,`, and `.`. For example, name the parameter as `adminName`.
   * **Default value**: Enter the default value of the parameter. Parameters can only be of type **String**. This field is not mandatory, so if you leave it empty, the parameter is an empty string. For example, set the default value to `JohnDoe`.
   * **Hint**: Offer additional information about the information that the parameter holds. For example, add the following hint: `The supervisor of the organization`.
4. Select **Create** to create the parameter.

## Result

The parameter is created and available in the **Parameters** tab of the test case. For manual executions, you can reference the parameter in manual steps using double curly brackets, and the value is applied at runtime.