# If Empty String

Checks whether the specified string is $null or an empty string. During the check, the string is also trimmed (spaces and other characters are removed from the beginning and the end).

<table data-header-hidden><thead><tr><th width="265" valign="top"></th><th width="296" valign="top"></th></tr></thead><tbody><tr><td valign="top">Text</td><td valign="top">[Text] Input string.</td></tr><tr><td valign="top">Error Handling Level</td><td valign="top"><p>Select the error handling level. Possible values:</p><ul><li>"Default" - default;</li><li>"Ignore" - errors are ignored;</li><li>"Handle" - errors are handled.</li></ul><p>If "Default" is selected, the value from the "Start" block of this diagram will be used.</p></td></tr><tr><td valign="top">Output Direction</td><td valign="top"><p>Select the output direction from the block in case of an error. Possible values:</p><ul><li>"Default" - default;</li><li>"Right" - to the right;</li><li>"Bottom" - down.</li></ul><p>This property allows you to determine the output direction in case of errors for blocks that do not contain the "If Error" connector (for example, the "Condition" block).</p><p>If "Default" is selected, the value from the "Start" block of this diagram will be used.</p></td></tr><tr><td valign="top">Message Level</td><td valign="top"><p>Select the message level that the blocks will output during operation. Possible values:</p><ul><li>"Default" - default;</li><li>"Release" - output is disabled;</li><li>"Debug" - main information output;</li><li>"Detailed" - detailed information output.</li></ul><p>If "Default" is selected, the value from the "Start" block of this diagram will be used.</p></td></tr><tr><td valign="top">Error Text</td><td valign="top">[Text] Returns detailed information about the error in case of incorrect execution of the block's work.</td></tr></tbody></table>


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