====== Tutorial 1 - Defining inputs ======

===== 3/5 =====

In this lesson we will assign values to [[Parameter|parameters]] and [[Lookup_table|lookup tables]].

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**Assigning parameter values**

  - Open the [[Blocks_window|blocks window]] by selecting **Window | Blocks** from the [[Menu_bar|menu bar]].
  - Select **Parameter** from the type drop down list in the [[windows#Title_bar|title bar]], located next to the search field.
  - The table now lists all [[Parameter|parameters]] of the [[Model|model]]. Like with the [[Expression|expression]] blocks of the previous lesson, you can either right-click a parameter and choose **Edit** from the pop-up menu or directly assign a value in the table.
  - Assign the following parameter values:

^Parameter  ^Value^
|//Salary// |210  |
|//Rent//   |42   |
|//TaxRate//|0.43 |

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**Assigning values to //Fees//**

Time depending inputs are represented by [[Lookup_table|lookup table]] blocks. You cannot enter time-dependent values directly in the [[Blocks_window|blocks window]], but must do so by editing the object.

  - Open the [[Blocks_window|blocks window]] by selecting **Window | Blocks** from the [[Menu_bar|menu bar]].
  - In the **Type** drop-down list, select **LookupTable**. Now only lookup table blocks are shown in the table.
  - Right-click the [[Lookup_table|lookup table]] named //Fees// and choose **Edit** from the pop-up menu.
  - Select the **Values** tab. Select **Use Input Nearest** from the **Interpolation** drop down list.
  - The first column of the table is for time-points and the second is for values. 
  - Enter the following data:

^Time^Amount^
|0.0 |3000  |
|31.0|3000  |
|59.0|3400  |
|90  |2500  |
|120 |3100  |
|151 |2300  |
|182 |0     |
|212 |0     |
|243 |0     |
|273 |3900  |
|304 |5900  |
|334 |2100  |

Click **Ok** to close the window.

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{{edit_lookup_fees.png|Screenshot}}\\

**Assigning values to //Sales//**

Follow the same procedure as above, and assign the following values to //Sales//:

**Interpolation** = “Use Input Nearest”

^Time^Amount^
|0.0 |5300  |
|31.0|0     |
|59.0|0     |
|90  |10    |
|120 |0     |
|151 |8050  |
|182 |0     |
|304 |150   |
|334 |1900  |

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**Next**

  * [[Tutorial_1-Running_a_simulation|Running a simulation (4/5)]]

**Previous**

  * [[Tutorial_1-Creating_the_model_objects|Creating the model objects]]

**References**

  * [[Tutorials|Back to Tutorials]]
  * [[start|Home]]