Hi guys i need help in voice flow for custom data type

Hi guys i need help in voice flow for custom data type i am not able to understand that. I am developing a mini chatbot for inventory management where in i require to enter item code now item code value can be anything but in my capture node i select create new entity and select data type as custom it asks for values to be entered so i gave couple if values and i saved. When i test the bot to display the entered item code it doesn't display like lets say i enter item code as I100 when i display the output through text node it displays only I ignores 100. Also in custom data type we have options of creating variations which are from voice flow if i print those suggested values it displays correctly so what i want is that i enter any value and it should display correctly. in botpress its pretty straight forward we just select type as string and enter any value but in voice flow i don't understand so kindly help with that.