# ISOMITTED

Spread for WinForms provides advanced software components that support Excel import/export, full cell customization, an extensive calculation engine with over 450 functions and more, all with zero dependencies on Excel.

## Content



This function checks whether the value in a [LAMBDA](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsFtoK/functionLambda) is missing and returns TRUE or FALSE.

## Syntax

ISOMITTED(argument)

## Arguments

Specify a value you want to test, such as a LAMBDA parameter.

## Data Types

Returns TRUE or FALSE

## Examples

`ISOMITTED(a)`
`LAMBDA(x,y, IF(ISOMITTED(y),"Missing second argument",x+y))(1,)`

## Version Available

This function is available in product version 15 or later.