How can I make an input for a function graph?

Hi

To use Get Float with a 'green dot' input you have to add that input to the node for it to 'Get'. So in way of a demonstration:

First, add an input to the node within which you are using the function. In the example below, which uses the 2D transform function, I've called it #Myinput. I've made the type Float but you could also alter it to Float2, Float3, Integer etc as required.

Then click on Edit Matrix Values as, in this example, I will use #Myinput to control the scale for this node.

Next add the function to control that matrix.

In the function I add a Get Float node and in properties choose, from teh drop down list, the input I added in step 1 above.

Finally I added a couple of function nodes to make that Float input do something (in this case control the scale). The scale node is set as the output node for the function.

I hope that helps

Dave