I made a custom keypad by just using buttons in a table and calling a nanoflow to change a value of a non persistent entity. When I originally made it I had to make a nanoflow for every number, I believe this may be what you also need to do in your version. If you were on a newer version you could use that pass value to nanoflow feature and only need one nanoflow,.
Thanks for the reply I have created the page to host the keypad using a data view connected to a non persistent entity for the number input, inside this is a Text Box to display the entry and below it is a container to host the keypad layout grid.
I have create a nanoflow with 2 parameters as below,
The change object is set to the following,
but when I try to pass the button to the nanoflow I receive the below and I just need the digit to say 1 what am i missing pleas as I feel i'm so close to resolving this issue.