toda yamamoto model

[siq]

I want to ask can we find
1. that whether ther is positive causality or negative between variables through toda model kindly tell the procedure
2. Similarly how short run n long run causality can be found through toda

. I have found resultas of bidirectional causality by using toda but now I want to find the the above points .plz guide

[siq]

plz any one knows about the above problem..i need its ans urgenly plz help