TYT TH-UV8000D Radio problems

I bought a tyt FM transceiver TH- UV8000D
The other day and I wanted to use it at my job site where we have two way radios in all the vehicles I can hear my co-workers perfectly fine but I am unable to talk back to them I got the radio channel frequency that they use like the . but they can’t hear me when I talk what is the problem

Good morning, Austin. The most likely culprit for this issue is a PL tone mismatch. You will need to check your existing radios’ settings to see if they are using a CTCSS or DCS code in conjunction with the operating frequency. If these codes do not match, you will experience the same issue that you described. Once you have the code information from your older radios, simply program the same code into your new radio, and you should be in business!

Where would I find that code on the other radios

Well, that depends on what type of radios they are. Do you know the make and model of your existing radios?