surface transparency works in editor, but not when i build to device

well if you have set your materials shader to StanderShader you could simply do this: If possible and no changes have to be made to your Material at Runtime, except changing the Transparent Value, you're better off with predefine everything(Color,RenderQueue and Stuff). if not I'd recommend writing your own Shader and modify that, or create for each Preset a new Material..(might be a bit Performance costly)..

let me know if this is what you'd like to achieve.

Dan

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class YourClass : MonoBehaviour {
 
     public GameObject pial;
     
     public void SetTransparent(string objectString, float alpha)
     {
         // i'd recomend to set the pial GameObject manualy over the Inspector.
         if(pial == null){
             GameObject pial = GameObject.Find(objectString);
         }
 
         MeshRenderer[] rendererArray = pial.GetComponentsInChildren<MeshRenderer>();
         MeshRenderer renderer = rendererArray[0];
         Material material = renderer.material;
         
         Color col = new Color(material.color.r,material.color.g,material.color.b,alpha);
 
         //if really necessary you add your Lines here, but if you have predefinde all 
         //settings in your Material settings in Inspector it's not necessary anymore
 
         //material.SetInt("_SrcBlend",(int)UnityEngine.Rendering.BlendMode.SrcAlpha);
         //material.SetInt("_DstBlend",(int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
         //material.SetInt("_ZWrite", 0);
         //material.DisableKeyword("_ALPHATEST_ON");
         //material.EnableKeyword("_ALPHABLEND_ON");
         //material.DisableKeyword("_ALPHAPREMULTIPLY_ON");
         //material.renderQueue = 3000; 
     }
 }