''insertAfter'' command does not work

So many times I have tried to use insertAfter command, I always get this error message:Undefined function or variable 'insertAfter'.

Answer 1

[Stephen23]

When you read the insertAfter documentation it states in bold lettering "Introduced in R2016b". What version of MATLAB are you using? If you have an earlier version then this function will not exist.

Alternatively you might be trying to use the function on some data that is not of class string. If you gave us the complete error message (i.e. all of the red text) then we would actually be able to tell you which of these it is.

[Tihomir Jevtic]

I'm using 2016a, there is a problem. Thank You very much!