Bank Robbery

B decided to rob a bank. He needs to get through the underground tunnels, find the way to the service entrance, crack the code, go through the room with lasers, and deceive the electric traps. But a bank robbery can end badly. Good luck friends!
No TRICKS! On the roof is used "slippery slider":
http://mekoramaforum.com/media/slippery-slider.26629/

There is an obvious clue to the code in the level - look for it. You will have to choose only one variable - 2 options.

Spoiler: Code - Solution

Spoiler: VS

Attention! To avoid restarting - open the bottom slider gently and slowly

Excellent level and design. I managed to figure out the code and reach the roof!

There's a slightly quicker way to escape at the start:

Spoiler: my way

Look under the slider to see B's legs. Then just click on the floor in the right corner and he will move to a safe spot. Pull out the slider to release B from the side.

@Chris Hester
Yes my friend, you are right. Can be done as you say. It's inconvenient, but possible.
Thank you very much, I'm very glad you liked it!

I like the movements on the roof and the code wasn't obvious but detective B cracked it eventually.

@ohmytian Thank you very much

Enjoyed the story and the design.

Haha...unique levelreally liked it , especially the roof,I had a lot of fun THANKS FOR SHARING

@ridgerunner @Adiorama
Thank you very much my friends

Very fun and clever series of puzzles! The most fun part is the roof. The most clever part is the clue to the code. Excellent!

@Logo Thank you very much my friend! I'm really glad that you liked it

Excelent design. Very fun! Thanks for sharing.

@D33P5PAC3 Thank you very VERY much!!!

Very fun and kind of an easy side for your levels. Enjoyed figuring out the code and the slider roof was a hoot

@Sammy 5 Oh Thank you very VERY much my friend!!!

Very fun storyline & although not good in code levels this was very suitable for me... спасибо @Denis Nazin