I need to pass a dynamic variable as a number and not as a string

Windows 10pro
Server PHP, Mysql
Wappler 4.1.1

Hi guys I don’t know how to pass a dynamic value as number to API
As soon as I put double quotes, the api returns error
and if I remove the double quotes the wappler won’t let me save a action

I need to pass a dynamic variable as a number and not as a string

Please does anyone know how to fix this?