# Node single property variable not working?

I am making a node group,and for this node group I want to make an input connected to a value in the bokeh image node,but unfortunately the node has no inputs so I had to see another way to make an input (If you know how to do this please tell me),so what I did is adding a math node and add a driver to the input in the bokeh node with the variable the 1st input in the multiply node (math) while the 2nd input equal 1,but when I add a variable to the driver (single property variable) and select the scene and copy the RNA of the 1st value in the multiply node nodes["Math"].inputs[0].default_value it didn't work and value is not updated and it is marked in red as you see here

so how can I get it work?

You should use node_tree.nodes["Math"].inputs[0].default_value
• Use the Outliner its all there. Its probably node_tree.nodes['Group'].node_tree.nodes['Math'].inputs[0].default_value where the 'Group' is name of your node group and 'Math' node is inside that group – Jaroslav Jerryno Novotny Dec 16 '14 at 18:25