How to get position of a character in a string when setting up DAC properties?

Hello all,

I was wondering does Acumatica have any function that can be used in its DAC properties settings to dynamically return the index of a Character in String something like IndexOf or LastIndexOf?

For example typeof(Substring<DAC.Field, Zero, IndexOfChar>)

I can have it in get/set but I need it in the properties.