operation to allow a purely mechanically operated valve to be cheaply converted to a hydraulic operation by the simple addition of a module 10 before running the assembled components downhole the j slot can be configured for a variety of pressure application and removal cycles before actuation the pin 44 can be a pair of pins disposed at 180 degrees so that when there is actuation the movement is guided at the pins 44 to prevent cocking of the index sleeve 41 it should be noted that fig3 has two long slots 6 cycles apart but that when two pins 44 are used it will take 12 cycles for both those pins to be aligned with the long slots and no other lugs blocking actuation for the actuation to happen depending on the number of cycles to actuation and the diameter of the components the use of blocking lugs can be eliminated and any alignment of the pins 44 with the illustrated long slots of the j slot pattern of fig3 will result in actuation of the piston 25 and the rod 24 to operate the preferred tool and that is a 90 degree isolation ball valve other tools such as sliding sleeve or packers with setting sleeves for example can be optionally set hydraulically with the module 10 the advantage of the module 10.