Grid Style System Added to Existing EA

Hi, 

i still learning to code my own EA. i  fail to ADD grid in my existing EA. i want you to add grid style in my EA and provide video to me how to do and teach me how can i do by my self.

Below what i looking for;

Use Grid- True/False

Grid Step - 300

Lot Multiplier - 1.5

Maximum Lot - 1.0

Take Profit - 100

Thank you.