I'm trying to to make a item that applies Crossbow expert to ranged weapons but i can only get it to apply to longbow and short bow but not any other ranged weapons any help would be appreciated. i have one made for Great weapon master and that works for all melee but there is no ranged equivalent under damage.

https://imgur.com/a/HKtI6MU

 so far

I haven't done anything like this, bit I would say to look if there is an option to add the crossbows. It should be on the edit part of that. Sorry I'm not the best (I'm waiting for IamSposta to tell me I'm wrong. He'll help hopefully). 

I’m not really sure what you are trying to do exactly. Crossbow expert has three bullet points as follows:

Thanks to extensive practice with the crossbow, you gain the following benefits:

• You ignore the loading property of crossbows with which you are proficient.
• Being within 5 feet of a hostile creature doesn’t impose disadvantage on your ranged attack rolls.
• When you use the Attack action and attack with a one-handed weapon, you can use a bonus action to attack with a hand crossbow you are holding.

• The only standard D&D weapons with the Loading property are crossbows. This part of the feat does not actually remove the loading property from crossbows with which you are equipped, it’s just text telling you that you can ignore the property. If you want it to work for something like firearms al you have to do is change the wording of the text. Bows and Slings do not have the loading property.
• This already applies to all ranged attacks you make including ranged spell attacks like Fire Bolt, Ray of Frost, and Eldritch Blast. This is also just text.
• This is also just a text description as well.

Basically, none of these need modifiers at all, so I’m not really sure what it is you want to do. If you want a better idea how Crossbow Expert works, then make a homebrew feat using Crossbow Expert as the template. That will allow you to dissect it to see how it works, you can always delete it when you’re done.

Edit: I cannot see the embedded pic, and didn’t follow the link itself. That was my bad, sorry about that. I see you meant Sharpshooter, not Crossbow Expert.

There are no modifiers that I am aware of to do that. For most folks with Sharpshooter/Great Weapon Master, what we do is put a second weapon of the same type on the character and then customize it directly on the character sheet. That way we can choose to either use the feat or not depending on the situation.

Sorry sharpshooter feat