h1. First issue

*Steps to reproduce:*

1. Make sure *Additional Debug info* is enabled in the Visual Effects preferences (see !QsqVNTG5mC.png|thumbnail! )
2. Create a new VFX Graph
3. Add a Custom Hlsl block in the Update context
4. Write down the following code in the custom hlsl node
{code:c#}
void Test(inout VFXAttributes attributes, in float value, in float altSize)
{
if (attributes.position.y >= value)
{
attributes.size = altSize;
}
}
{code}
5. Select the Custom HLSL node
6. Notice in the inspector that the position attribute is not detected
7. With the following code instead, it works as expected
{code:c#}
void Test(inout VFXAttributes attributes, in float value, in float altSize)
{
float3 position = attributes.position;
if (position.y >= value)
{
attributes.size = altSize;
}
}
{code}
*Actual results:* 
When looking in the inspector, the *position* attribute is not listed at all (see !HtZ6FPWDad.png|thumbnail! )
*Expected results:* 
When looking in the inspector, the *position* attribute should be listed in *read* mode

 
h1. Second issue

Using the same piece of code, when changing the formatting to the following, the function's parameters are not properly identified:
{code:c#}
void Test(inout VFXAttributes attributes
, in float value
, in float altSize
)
{
if (attributes.position.y >= value)
{
attributes.size = altSize;
}
}
{code}
*Actual results:* 
The Custom HLSL block has many error feedback displayed and the input port are not present.

*Expected results:* 
The two ports are available and no error feedback is displayed

*Reproducible with versions:* 
6000.0.17f1 (but most probably any 2023.2 or later version)
*Not reproducible with versions:* 

*Can’t test with versions:* 

*Tested on (OS):* 
Windows 10

*Notes:*
In the provided scenario it makes no harm because anyway, position attribute is used by other nodes, but in a more complex scenario it can lead to compilation issue.