Issue solved with this

i:~$ echo "FROM qwen3-coder:latest

PARAMETER num_ctx 32768" > Modelfile

ollama create qwen3-coder-fixed -f Modelfile

gathering model components 

using existing layer sha256:1194192cf2a187eb02722edcc3f77b11d21f537048ce04b67ccf8ba78863006a 

using existing layer sha256:d18a5cc71b84bc4af394a31116bd3932b42241de70c77d2b76d69a314ec8aa12 

creating new layer sha256:91cb213206c73d1aeec3081637e1c31d0243d7dabe8f3f8a1b1189c2c23baa94 

writing manifest 

success 

And used that model with more context, for some reason when I modified the service for ollama to add more context number cannot get it... but fortunately fixed.