Amplifiers, Rails and current sources

Hello,

Please look at the following data sheet of an instrumentation amplifier INA2133.

I am using it as a constant current source ( figure 16, page 13 ). I made the following changes in the circuit

1. I put a capcitor in series with the load for AC coupling reason.
2. The power supply of the circuit is +/- 15 volts.

I have a following questions about the circuit.

1. For example, if the circuit is producing 100microA and the load resistance is 1mega ohm then the complaince voltage will be +/- 10 volts or the voltage across the load will be +/- 10 volts. How can I keep the complaince voltage or voltage across the load equal to +/-

Please advice! Thanks John