# Options
Fill in the following fields in the table. Entries in **Field A**, **Field B**, and/or **Field C** are used by the selected calculator function in the **Calculation** field.
| Column | Description |
| ----------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **New field** | Specify the name of the field. |
| **Calculation** | When you click or press in this field, the Select the calculation type dialog box appears. Enter the calculator function to use in the transformation. A description of each function is in the Calculator Functions List. Use the **Filter** field to search for a specific function. |
| **Field A**, **Field B**, and **Field C** | Enter the value(s) for executing the specified calculator function in the **Calculation** field. |
| **Value type** | Select the field's data type from the dropdown list or enter it manually. |
| **Length** | Specify the length of the field, according to the following field types:
- Number: Total number of significant figures in a number.
- String: Total length of the string.
- Date: Length of printed output of the string (for example, 'four' is a length for a year).
|
| **Precision** | Specify the number of floating point digits for number-type fields. |
| **Remove** | Remove this field from the result (output) after all values are calculated. This field is useful for removing temporary values. Select **N** or **Y**. |
| **Conversion mask** | Specify a format for the field, such as a date format. See [Common Formats](/pdia-data-integration/10.2-data-integration/pdi-transformation-steps-reference-overview/common-formats.md) for information on common valid date formats you can use in this step. |
| **Decimal symbol** | Specify the symbol used to represent a decimal point, either a dot (.) or a comma (,). For example, 5,000.00 or 5.000,00. |
| **Grouping symbol** | Specify the method used to separate units of thousands in numbers of four digits or larger, either a dot (.) or a comma (,). For example, 5,000 or 5.000. |
| **Currency symbol** | Specify the symbol used to represent currencies, for example, $ or €. |
The Calculator step also allows you to indicate if you want errors displayed for the following condition:
* Select the **Throw an error on non existing files** check box if you want the transformation to generate an error when there are no files to process.
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