# mustBeText

Checks that value is piece of text or raise an error.

## Syntax

* mustBeText(var)
* mustBeText(var, argPosition)
* C++: void mustBeText(const ArrayOfVector& args, int argPosition)

## Input argument

* var - a variable: a string array, a cell of strings, or row vector characters array.
* argPosition - a positive integer value: Position of input argument.

## Description

**mustBeText** that value is piece of text or raise an error.

## Example

```matlab
mustBeText('true')
mustBeText(["f", "ff"])
mustBeText("hello")
```

## See also

[ischar](../types/ischar), [isstring](../types/isstring).

## History

| Version | Description     |
| ------- | --------------- |
| 1.0.0   | initial version |

## Author

Allan CORNET
