What is the test for a plaintiff to succeed on a claim of instructional error?

An instruction is not considered in isolation, but in the context of the court's entire charge to the jury. (People v. Castillo (1997) 16 Cal.4th 1009, 1016.) To succeed on a claim of instructional error, a defendant must show that "there is 'a reasonable likelihood' the jury understood the instructions as the defendant asserts," considering "the specific language challenged, the instructions as a whole and the jury's findings. [Citations.]" (People v. Cain (1995) 10 Cal.4th 1, 36.)