Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: jus got this today why is it that when i cock it the cable has nothing to hold on to?
Document: Wish I would have read Reviews before I ordered. This item is junk... I have a MTech 80 lb.draw pistol crossbow which I love. This is lucky to be 40lb draw not the 90lb advertised. The red dot is a joke and the trigger mechanism wont hold the draw string. Got product today 3/21/13 and its repackaged and on it's way back to Amazon same day. And those who thjink the red dot is worth the price of bow are nuts.
Purchased this, set it up correctly, the third time firing it,  the plastic piece holding the pulley for the cable snapped and flew back at me. I contacted the company that day with my claim number that told there was nothing they could do....they claimed they could not find it in their system.
It is nothing but a toy as is though it has the potential for some easy modification to become more with a little ingenuity. There is also no way to mount the red dot sights without fully disassembling the original sight layer by layer which I have not bothered to do. It only took a dozen firings to damage the cable so be sure and wax the top plate to maybe double the firings.
Anyway, where the rotating C-notch (holds the cable) meets the trigger lock, it has started to bend and erode. I put it back together after cleaning up the metal a bit and it would then hold, but only with the safety switch up. Unlock the safety and it fires. I went online to see if anyone sold parts or something....and didn't find any. I just considered this a learning experience and threw the hunk in the trash.
If you want more proof, I can cock it by pulling the string (cable) all the way back with one hand, not using the cocking lever at all, and I am a 60 year old computer geek, not a muscle builder. There is no way I could pull the string (cable) all the way back with one hand if it took more than 40 lbs of force.
Another note, when cocking, you must make sure the cable catches on both sides as it is so loose it slips at first contact and the bow bolt with the ability to attach the spool is so buggered it will not hold the spool. Even without enclosed directions it was easy to assemble from just the picture. DO NOT DOUBT this bow will kill at 10 yards though I seriously doubt it would do more than just break skin at much beyond.
My son found this online and ordered it. It is ok. It is more a teenager's beginners crossbow. Dont get me wrong, this thing could really be dangerous if a irresponsible person or a child that didn't know any better got a hold of it. It suits our purpose.
I am an engineer, so I am sure I assembled and tested this correctly. After assembling it, I put the back end of it down on a calibrated weight measuring scale and manually pushed the string (actually cable) all the way back to cock it. All the force I applied to the string (cable) was transmitted directly onto the scale. But the scale only read 35 lbs with the string (cable) pushed all the way back to the fully cocked position.
When I first got it I though all the bad reviews were wrong but then I shot it for the 5th time and the cable fell off and I lost the bolts. Don't waste your money on this
So I purchased a fiberglass pistol crossbow limb to replace it with. And let me tell you NOW I have a nice little crossbow for messing around in the backyard with.The results of doing this mod were nothing but positive. I got a stronger quieter bow. The draw with this fiberglass limb is about  to  of an inch longer than it would be on a pistol crossbow. I have fired it at least 50 times with this configuration and it shoots great.
Answer: yes