Hello K2Developer-1

Please check out the following article, I hope it helps.

Changing the data type of the SmartObject property by editing it directly in K2 Designer: https://help.k2.com/support-services/kbt155719.

Best,

Sunrise

  @K2Developer-1 

Please have have a look at the following link that will guide you on editing smartObject data types.

https://help.k2.com/onlinehelp/k2five/userguide/5.3/default.htm#Create/SmartObjects/SmOProperties.htm%3FTocPath%3DCreate%7CSmartObjects%7C_____7

When you get to the link above please pay attention to property setting

I hope this helps!