How to modify $SERVICEOUTPUT

Troubleshooting
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9

I want to have a specific item on output like this :grin:

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image983×471 14.3 KB

if i print only first 30 charaters there is a problem with some cases like this

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image723×24 2.03 KB

commit charge percentage will not be shown in sms text.

so i want to cut off unnessary item in $SERVICEOUTPUT.