matrix

matrixに値を入れたいとき、

node['matrix'].setValueAt(value, frame, index) 

matrixの値を取得したいとき、

node['matrix'].getValueAt(frame)[index]

When you want to set the value into matrix,

node['matrix'].setValueAt(value, frame, index) 

When you want to get the value of matrix,

node['matrix'].getValueAt(frame)[index]