# TryParseDate (String, UnknownDate)
| **Name** | ***TryParseDate*** |
| ----------- | ------------------------------------------------------------------------------------------------------------------- |
| Syntax | TryParseDate (String str, Unknown date) |
| Purpose | To carry out a parameter test which checks whether a string value can be converted into a DateTime format value. |
| Description | Returns true if a string value is successfully converted and parsed into a DateTime value. Otherwise returns false. |
| Return Type | Boolean |
| Parameters |
Str \[System.String] – Value to be tested
Date \[System.DateTime]
|
**Example**
In this example, we will pass a string value representing an unknown date format to the function transformation object using a *Variables* object.
Where,
*str* = 1978.MAR.17
In the output window, you can see that the provided value has been parsed successfully, the unknown date format has been converted into a known date format, and the Boolean value, True has been returned, indicating a successful parameter test.
