Hi @ipazin,
Thank you for your response.
I tried what you suggested, it worked (i had to also use the Render to image node in order to convert it to png).
Although now I have another problem… I have difficulties with the image resizing.
Initially, the chart exported on the excel file was really small and could only fit in the first cell. I tried to change the size of it (by adjusting the Chart node and the Render to Image node configuration options), but even though I tried so many width&height combinations, the image only gets distorted.
Could you please advise?