How to set up the Journal Lines Definition to create negative amount accounting for RMA material tra

Normally, accounting for material transactions of RMA is as below:

DR. Inventory Valuation     100

       CR. Cost of Goods Sold      100

However, an adjustment need to be taken to create accounting from SLA and transfer to GL. We have the expectation to create a negative amount accounting as below:

DR. Inventory Valuation     -100

       CR. Cost of Goods Sold      -100

We try to change the setting of Journal Lines Definition:

I changed the setting highlighted above for each possibilities. It worked for Cost of Goods Sold but the results cannot get a negative amount for Inventory Valuation. Does anyone know how to change the setting?