# Setting members of structs in Cxx.jl
**URL:** https://discourse.julialang.org/t/setting-members-of-structs-in-cxx-jl/2260
**Category:** General Usage
**Tags:** cxx
**Created:** [February 23, 2017, 10:53pm UTC](https://discourse.julialang.org/t/setting-members-of-structs-in-cxx-jl/2260 "2017-02-23T22:53:56Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@rcnlee](https://discourse.julialang.org/u/rcnlee)
#### Post date: [February 23, 2017, 10:53pm UTC](https://discourse.julialang.org/t/setting-members-of-structs-in-cxx-jl/2260/1 "2017-02-23T22:53:56Z")
Hello,
In Cxx.jl, I can create structs and read values of members, but is there a way to set the value of a member directly, i.e., without creating a setter function?
> obj = @cxxnew MyStruct() #create instance
> xval = @cxx obj-\>x #read member value
> @cxx obj-\>x = 5.0 #how to set? this doesn’t work
Thanks!
---
### Author:  [@Keno](https://discourse.julialang.org/u/Keno)
#### Post date: [February 23, 2017, 10:56pm UTC](https://discourse.julialang.org/t/setting-members-of-structs-in-cxx-jl/2260/2 "2017-02-23T22:56:08Z")
Generally the string macros are preferred for anything non-trivial, so you’ll want something like:
```julia
y = 5.0
icxx"$obj->x = $y;"
```
(y being a variable for illustrative purposes only, you can of course put the 5.0 in there directly).
---
### Author:  [@rcnlee](https://discourse.julialang.org/u/rcnlee)
#### Post date: [February 23, 2017, 11:54pm UTC](https://discourse.julialang.org/t/setting-members-of-structs-in-cxx-jl/2260/3 "2017-02-23T23:54:33Z")
Works thank you!