Blueprints have very specific support for uint8, it’s called the Byte variable type (0-255)
is that sufficient for your needs?
If not let me know more about what exact range you need!
For anything smaller than a byte you could probably just declare an Enum, which is a byte in disguise with only a few defined values 
Custom Enums have amazing support in Blueprints!
Just right click in the variable space and click the last entry in the context menu!
#
Rama
#Custom Enums in BP are Awesome
