Trying to rotate arm with code

[targetframed (target)]

im trying to change my arm’s rotation through code. i have a picture of the sniper animation idle that i made and i want to rotate the arm 90 degrees / rad from where my animation is positioned / rotated if that makes sense. i appreciate any help tysm!!

script:

function module.rotateArmsFunction(p:Player)
	local c = p.Character

	local bpTable = {
		Head = 	c:WaitForChild("Head"),
		RightHand = c:WaitForChild("RightHand"),
		LeftHand = c:WaitForChild("LeftHand"),
		LowerTorso = c:WaitForChild("LowerTorso"),
		RightLowerArm = c:WaitForChild("RightLowerArm"),
		LeftUpperArm = c:WaitForChild("LeftUpperArm"),
		LeftLowerArm = c:WaitForChild("LeftLowerArm"),
		RightUpperArm = c:WaitForChild("RightUpperArm"),
		UpperTorso = c:WaitForChild("UpperTorso"),
		RightShoulder = c:WaitForChild("RightUpperArm"):WaitForChild("RightShoulder");
		LeftShoulder = c:WaitForChild("LeftUpperArm"):WaitForChild("LeftShoulder");
		RightElbow = c:WaitForChild("RightLowerArm"):WaitForChild("RightElbow");
		LeftElbow = c:WaitForChild("LeftLowerArm"):WaitForChild("LeftElbow")
	}
	
	bpTable.RightShoulder.Transform = CFrame.new(bpTable.RightShoulder.C0.Position) * CFrame.Angles(math.rad(90),0,0)
end

[targetframed (target)]

right so i got it after reading some posts. this is the solution for anyone else:

function module.rotateArmsFunction(p:Player)
	local c = p.Character

	local bpTable = {
		Head = 	c:WaitForChild("Head"),
		RightHand = c:WaitForChild("RightHand"),
		LeftHand = c:WaitForChild("LeftHand"),
		LowerTorso = c:WaitForChild("LowerTorso"),
		RightLowerArm = c:WaitForChild("RightLowerArm"),
		LeftUpperArm = c:WaitForChild("LeftUpperArm"),
		LeftLowerArm = c:WaitForChild("LeftLowerArm"),
		RightUpperArm = c:WaitForChild("RightUpperArm"),
		UpperTorso = c:WaitForChild("UpperTorso"),
		RightShoulder = c:WaitForChild("RightUpperArm"):WaitForChild("RightShoulder");
		LeftShoulder = c:WaitForChild("LeftUpperArm"):WaitForChild("LeftShoulder");
		RightElbow = c:WaitForChild("RightLowerArm"):WaitForChild("RightElbow");
		LeftElbow = c:WaitForChild("LeftLowerArm"):WaitForChild("LeftElbow")
	}
	
	bpTable.RightShoulder.C0 = CFrame.new(bpTable.RightShoulder.C0.Position) * CFrame.Angles(math.rad(90),0,0)
end

extra:
i had to set the animation priority for my animation to idle bc my animations rotation was overriding the rotation i wanted (to rotate the arm 90 degrees past my animations initial rotation)