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\<bookmark_value\>IsDate function\</bookmark_value\>

# IsDate Function

Tests if a numeric or string expression can be converted to a \<emph\>Date\</emph\> variable.

## Syntax:

    IsDate (Expression)

## Return value:

Bool

## Parameters:

\<emph\>Expression:\</emph\> Any numeric or string expression that you want to test. If the expression can be converted to a date, the function returns \<emph\>True\</emph\>, otherwise the function returns \<emph\>False\</emph\>.

## Error codes:

5 Invalid procedure call

## Example:

    Sub ExampleIsDate
    Dim sDateVar As String
        sDateVar = "12.12.1997"
        print IsDate(sDateVar) REM Returns True
        sDateVar = "12121997"
        print IsDate(sDateVar) REM Returns False
    End Sub