Steps to reproduce:

1. For PCF JMX or other devops plateform, they provide long JMX object name
2. When i use dicovery  item prototype to gen item as : CPU percentage {#JMXOBJ}
3. The graph gen date below

Result:
Can not show complete data
Expected:
optunuzi macros like using : {#JMXOBJ.job}, {#JMXOBJ.name}

or  show complete graph when the item name is long