1995 Nissan Truck Will it harm my Transmission

My parking break is old and does not hold the truck on my driveway (which is on an incline). If I put my truck in first gear and set the parking bread to max, my truck will stay on the driveway without rolling backward. My question is: Will I harm my transmission if I use first gear to help hold the truck on the driveway?
Thank you for any info you can give me