How to Modify Take Profit Order on MT4

First select the open trade transaction you want to modify a TP Indices Order to.

Once you have selected open trade - select modify order button and following trade order window popup will appear and you as the trader can use this trade order window popup to modify the Take Profit Order Level for your new trade.

This popup includes the settings for setting Take Profit Order Level - type in your Take-Profit TP Indices Order level & Click the 'Modify' button to modify the TP Indices Order to your open trade.

How to Modify Take Profit Order on Meta Trader 4