How to use parameters from data dictionary in sinmulink's callback function?

i have a simulink model , and Desing data defined in Data Dictionary. now i want to initialize a variable by parameters from data dictionary in initFcn function. but it doesn't work:

Undefined function or variable 'x'. Variable 'x' does not exist.

what should i do?

Answer 1

[Fangjun Jiang]

Use API to open the data dictionary and get the value, or the easiest thing to do is

Simulink.data.evalinGlobal('modelName','x')

[Joe]

你好，我试过用api的话，生成的变量在workspace里面，但是因为模型选择了使用sldd，好像识别不了workspace里面的变量。所以报一样的错。我的目的是想用字典里已经存在的parameter去初始化一些参数。比如说我字典里有参数为轮胎的周长a，那么初始化的时候我得到半径：r = a/(2*pi)。

[Fangjun Jiang]

Did you try Simulink.data.evalinGlobal()? There is also Simulink.data.assigninGlobal()