Issue when using LIKE_REGEXPR in Calculation Views

Hi all,

I an working on a Graphical calculation view in HANA . we need to check if the input is a numeric or character.If the input is numeric then the leading zeros should be trimmed.

Since custom functions cant be used in Calculated Views, I have tried creating a calculated column and put the following logic in the Expression:

like-regexr.png

During validation it didnt show any errors. However when i tried to execute this View and see the raw data it is giving the following error.

boolean-error.png

However, when i executed LIKE_REGEXPR as a query , It did not give an error.

db-querylikeregexp.png

It is only giving this error when trying to use in The Calculation View. Please help me on this.