A problem about saving crm order

Question

Hi Expert,
    I creat a Web Dynpro Component in my local object,
    the Web Dynpro read the "analysis content" of issue from CRM, -
It works fine,
    however, when I changed the "analysis content" of issue and save it to CRM, -
an exception is throwed,
    I don't know why.
    I think the web dynpro component is created as local object, so it can't save data to CRM, isn't it?
    Below is the source code, I add some comment.
    Can anybody give me some suggestion?
    Thank you very much!
Best Regards,
Derek
  DATA lr_im_proxy TYPE REF TO cl_ags_esd_issue_mgmt_proxy.
  DATA: lv_analysis    TYPE string.
  CREATE OBJECT lr_im_proxy
    EXPORTING
      iv_guid         = ls_data-header_guid
      iv_process_type = cl_dswp_ci_constants=>slfi.
  wd_comp_controller->ar_im_proxy = lr_im_proxy.
  wd_comp_controller->ar_im_proxy->get_long_text(    "-- it works fine, the analysis of issue management are returned
    IMPORTING
      ev_analysis    =  lv_analysis
  wd_comp_controller->ar_im_proxy->set_long_text(
    EXPORTING
      iv_analysis    = 'hello world2!'
     iv_analysis    =  lv_datas_edit
  wd_comp_controller->ar_im_proxy->save(           "---- while save the content of issue to CRM, an exception occurs
     EXCEPTIONS                                                        "---- Perhaps the web dynpro compoent is created in local object,
        ex_error    = 1                                                  "----  So it can't save the content to CRM?
       OTHERS      = 2
  IF sy-subrc <> 0.   "---- sy-subrc = 1, an exception is throwed
  endif.

Answer 1

The behavior that Simon describes is not a hard and fast rule, and the Export Image method used to be a bit of an exception.  It would supposedly update the controls of unopened FPs that used the method.  Reality never quite matched what was described in the documentation if I recall.
If you pore over the detailed help you discover that this method works fine in SubVIs with some controls and not others.  Look at the characteristic 'Loads the Front Panel Into Memory', for a Picture control it is 'No', for a Waveform Graph, for instance, it is 'Yes'.  Caveat:  Relying on this level of detail to be correct in the LV help is a bit risky.  Best to try it yourself.  Not loading the FP is a good hint that the method is not going to behave in a SubVI.
As to the problem at hand, a Picture Indicator is an odd choice to me to use this method.  You have VIs in the Picture palette to convert pictures to image data and then export the image data to a PNG or JPG or BMP file directly.  Anything you would draw and then export could be exported directly without drawing.