How do I follow from a distance?

Here is a small sample of that chase mechanic built in Construct. The enemy has line of sight and move to behaviors. Tap to move the green character. The red character will chase if it has line of sight. If the red character is within attack range (stored in a range variable on the red character) it will stop moving and start shooting. If the player moves out of range, the red player will go back to chasing. If the red character loses line of sight, it has the ability to try to get it back by moving to the last known location of the player. If it reaches the last known position and still doesn't have line of sight, it stops and waits.

drive.google.com/file/d/166bydrsqn_XCW5L1q7Z1b_drnzxfeSq0/view