How to use Dino Spawning pads

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I cannot figure out how to get the red brick for the 4x points. I've found the rock and used the gyrosphere to smash it away but I can't figure out how to get the t-rex from the dino pad. I know I've unlocked it because I broke the glass in the vending machine in the control room.
What do I press once I'm standing on the dino pad? Is it just triangle and then choose a dinosaur? I've read that you need a larger pad to get a larger dino and I've tried both pads in the area but neither will give me a trex.
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How do you spawn a dinosaur on any map?
To add non-native dinos to your map, you will need to use code to add them to the spawn lists. For the data below, there are two values to consider when adding dino spawns to your ARK. EntryWeight and MaxPercentageOfDesiredNumToAllow. How often a dino is "considered" for spawning.How do you add a dinosaur to your map in Ark?
With Lego Jurassic World, players get to stomp around as their favorite dinosaurs. The easiest way to play as a dinosaur is to simply play the game. Early on, for example, you'll need to smash into debris with a Triceratops to clear the way....Medium Dinosaurs.DinosaurAbilitiesAnkylosaurusTail-Slam4 more rows•Jun 24, 2015How do you use big dinosaurs in Lego Jurassic World?
Head to the configuration tool, scroll down to the tool on the page. In the two drop-downs, select the dinos you intend to replace, for example we'll be replacing a Parasaurs spawn with a Dodos.How to use Simple Spawners (June 2021 Update) | Ark Survival Evolved Tutorial
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Images: Dunamosji Mosquera Jimenez, Sarah Chai, Andrea Piacquadio, Andrea Piacquadio